This article offers a detailed troubleshooting guide for resolving common issues when exporting CAD projects using Plex-Earth to Google Earth as KML/KMZ files, such as missing models, floating above/buried under the terrain, misplacements, scaling errors, incomplete exports, and Google Earth crashes, including step-by-step solutions and best practices, with support contact information for unresolved problems.
Applies to: any Plex-Earth version Audience: End users
Overview
This article covers the most common issues users encounter when exporting CAD projects from Plex-Earth to Google Earth as KML/KMZ files, along with their causes and step-by-step solutions.
How to enable Export Troubleshooting in Plex-Earth:
- Run the command
PXV_OPTIONS_EXPORTKMLin the CAD command line - Go to Preferences
- Enable Export Troubleshooting
- Proceed with the export
Common Export Issues
Use the table below to identify your issue and jump to the relevant section:
| Issue | Go to |
|---|---|
| KMZ opens but nothing is visible in Google Earth | |
| KMZ appears in the wrong geographic location | |
| Model is floating above or buried under terrain | |
| Model is shifted, distorted, or incorrectly scaled | |
| Export is incomplete or has missing features | |
| Hatches are not rendering correctly in Google Earth | |
| Unexpected colorful lines appear in the export | |
| Dashed lines appear as continuous lines | |
| Google Earth crashes when opening the KMZ file | |
| Export completes but errors were detected |
Case A: KMZ Opens, But Nothing Is Visible in Google Earth
Possible causes:
- Model is hidden or buried under Google Earth terrain
- Model is floating above the terrain
- Wrong export method used (2D exported as 3D or vice versa)
- Drawing contains objects incompatible with Plex-Earth export
- Model has not finished loading or rendering
Fixes:
- In Google Earth, go to Layers and disable the Terrain layer — check if the model appears
- Zoom out to verify whether the model exists elsewhere on the map
- If disabling Terrain reveals the model, re-enable Terrain. If the model still floats or is hidden under terrain, re-export using the correct method:
- 2D objects (lines, polylines, points, and similar) → use Export KML/KMZ
- 3D objects (including materials and textures) → use Export 3D KMZ
- If the drawing consists of many objects, leave Google Earth open and allow time for loading. Google Earth has rendering limitations that cause large models to load slowly
- If the objects still do not load, and it is a 3D export, re-export without grouping objects as a single model
- If nothing appears and incompatible objects are suspected, send the drawing to support@plexscape.com for further investigation
Case B: KMZ Appears in the Wrong Geographic Location
Cause: Incorrect or missing georeference applied to the drawing.
Fix: Apply the correct coordinate system for your project. If you do not know the proper coordinate system, go to Assign Georeference → Change Georeference → Custom Georeference, assign a known point of your export to Google Earth, and then re-export.
For guidance on georeferencing, see: Apply Custom Georeference
Case C: Model Is Floating Above or Buried Under Terrain
Possible causes:
- Unsuitable altitude mode selected before export
- Google Earth Terrain layer enabled or disabled
Fixes:
- Toggle the Google Earth → Terrain layer to enable or disable it and check whether the model aligns correctly
- Re-export the model using Clamped to Ground as the altitude method
If you must use Absolute or Relative altitude:
- Enable the Google Earth Terrain layer
- If the model is buried (lower than Google Earth's surface) → increase the model's elevation in the drawing and re-export
- If the model is floating (higher than Google Earth's surface) → decrease the model's elevation in the drawing and re-export
Partially or half-buried models:
- For 2D exports: If objects are close to the ground, they may appear half-buried or flickering. This is a Google Earth rendering limitation. The only resolution is to elevate the objects slightly above Google Earth's surface in the drawing and re-export using Absolute altitude
- For 3D exports: If the model appears partially buried when exported as a single model, re-export without grouping objects as a single model. If the models contain grouped objects (e.g., solar panel blocks), explode them into single objects and re-export
Case D: Exported Model Is Shifted, Distorted, or Incorrectly Scaled
Possible causes:
- Scale issues: Designing with the wrong units or not working in a 1:1 scale
- Shift or distortion issues: Inaccurately defined Custom Georeference, or a coordinate system that introduces discrepancies with the drawing data
For scale issues:
- Go to Set Georeference and check the Units setting
- If the units are wrong, correct them and re-export
- If you designed using a scale transformation (e.g., 1 meter to 1 centimeter for a 1:100 scale), convert to 1:1 before re-exporting
For shift and distortion issues:
- Create a Site Area
- Apply a Transform to the Coordinate System to match your objects
- Re-export
Case E: Export Is Incomplete or Has Missing Features
Possible causes:
- Parts of the model are on a hidden or frozen layer
- Mixed 2D and 3D objects were exported using the wrong method
- Parts of the model are partially buried
- Objects not supported by the Plex-Earth export
- Hatches are not exported correctly (see Case F for dedicated steps)
Fixes:
- Enable all relevant layers in the drawing and re-export
-
For 3D exports with missing 2D parts: Set
PXV_VAR_DAE_ONLY3Dto NO and re-export to include 2D objects - For 2D exports with missing 3D parts: 3D objects are intentionally ignored in 2D exports. Re-export using the Export 3D KMZ option instead
- For hatches: See Case F — Hatches Not Rendering Correctly
Case F: Hatches Are Not Rendering Correctly in Google Earth
Hatches with long curves may render as straight-line hatches in Google Earth. This is caused by the geometry of the hatch and the rendering capabilities of Google Earth, which do not preserve curved hatch boundaries.
Workaround — Replace the hatch with a mesh surface:
- Select the hatch and type
HATCHEDITin the command line - In the dialog, click Recreate boundary
- Select Region as the boundary object type and choose No when asked whether to associate the new boundary with the hatch, then click OK
- Hide the original hatch
- Select the new boundary and run the
CONVTOSURFACEcommand to create a mesh surface in that area - Change the color of the mesh to match the original hatch color (or assign it to the appropriate layer before starting)
- Export to Google Earth
The mesh surface will accurately represent the curved boundary in the exported KMZ.
Case G: Unexpected Colorful Lines Appear in the Export
Cause: You are performing a 3D export that also contains 2D objects such as polylines or lines. Google Earth renders these 2D objects with random colors due to its rendering behavior.
Fix: Run the command PXV_VAR_DAE_ONLY3D and set it to YES. This prevents 2D objects from being included when performing a 3D export.
Case H: Dashed Lines Appear as Continuous Lines
Cause: Google Earth does not support dashed or custom line types.
Fix: This is a Google Earth limitation and cannot be resolved. If dashed lines are critical to your deliverable, consider exporting a screenshot or PDF alongside the KMZ to communicate the intended line styles.
Case I: Google Earth Crashes When Opening the KMZ File
Possible causes:
- The model is too large or heavy for Google Earth to render
- Too many models are already loaded in Google Earth
Fixes:
- Close unnecessary models already loaded in Google Earth to free up memory
- Reduce the size of your export using these techniques:
- Define drawing objects as blocks to reduce file size
- Export the drawing in separate parts or sections
- Export as a single model where possible
- Follow the tips in 4 Tips to Optimally Export Solar Farm Projects to Google Earth
Case J: Export Completes, but Errors Were Detected
Cause: Export Troubleshooting detected incompatible or problematic objects during the export process. Further investigation is required.
Fix: Send the following to support@plexscape.com:
- The exported KMZ/KML file
- The export log file
- The drawing used for export
Best Practices for Exporting Complex 2D and 3D Models
Following these recommendations will help produce cleaner, more reliable KMZ/KML exports:
- Export 2D and 3D objects separately: Explode the model in the drawing, use Select Similar to group by type, then export 2D and 3D objects in separate operations
- Explode complex models: Break down complex assemblies before exporting to avoid rendering issues
- Use blocks: Defining repetitive objects as blocks reduces file size and improves anchor behavior in Google Earth
- Export large projects in sections: Breaking up large areas into smaller exports reduces the risk of crashes and incomplete renders
- Enable Export Troubleshooting: Always enable this before exporting complex models so that any issues are logged and diagnosable
Need additional help?
Contact support if:
Export completes with errors enabled
Objects are reported as incompatible
The issue persists after re-exporting with the correct settings
What to include in your ticket or message?
The exported KMZ/KML
The export log file
The drawing used for export
FAQs
How do I know whether to use Export KML/KMZ or Export 3D KMZ?
Use Export KML/KMZ for drawings that contain primarily 2D objects such as lines, polylines, and points. Use Export 3D KMZ when your drawing contains 3D objects, materials, or textures. If your drawing contains a mix of both, export them separately for the best result.
My model exported correctly before, but is now appearing in the wrong location. What changed?
The most common cause is a change in the georeference applied to the drawing. Check your current coordinate system and georeference settings and compare them with the previous export. If you are unsure, use Custom Georeference to assign a known point and re-export.
Can I export Timeline or historical imagery to Google Earth as KMZ?
No. KML/KMZ export in Plex-Earth is for CAD drawing objects, not imagery. If you need to visualize imagery alongside your export in Google Earth, you can use a georeferenced raster image as a separate overlay.
Why do my curved hatches appear as straight lines in Google Earth?
Google Earth cannot render curved hatch boundaries accurately. The workaround
is to recreate the hatch boundary as a mesh surface using
HATCHEDIT, CONVTOSURFACE, and then export the
mesh instead. See Case F
for the full step-by-step process.
My export is very large, and Google Earth keeps crashing. What is the most effective way to reduce file size?
The most effective approaches are to define repetitive objects as CAD blocks before exporting, and to split the export into smaller sections. Both significantly reduce the output file size. See Case I for more details.
The export looks correct in the KMZ file, but the colors are wrong in Google Earth. Why?
If unexpected colorful lines appear, it is likely because 2D objects
are being included in a 3D export. Set PXV_VAR_DAE_ONLY3D
to YES to exclude 2D objects from 3D exports. See
Case G.
I enabled Export Troubleshooting, and the export completed with errors. What do I do?
Submit the KMZ file, the export log, and the drawing to support@plexscape.com. The log file contains diagnostic information that our team needs to investigate the specific incompatible objects or issues detected during the export.
Why do dashed lines appear as solid lines in Google Earth?
This is a known Google Earth limitation — it does not support custom or dashed line types. All lines are rendered as solid in Google Earth regardless of their CAD line type. This cannot be resolved within the export process.
Can I export hatches to Google Earth?
Yes, but with limitations. Standard hatches may not render correctly in Google Earth, particularly those with curved boundaries. The recommended approach is to convert the hatch to a mesh surface before exporting. See Case F for the full workaround.
Related Questions
This article explains how to troubleshoot KMZ and KML export issues from Plex-Earth to Google Earth, including models not showing up, appearing in the wrong location, floating above or sinking into the terrain, and Google Earth crashing. You may have searched for:
- KMZ exported from Plex-Earth not showing up in Google Earth
- Exported KMZ file is in the wrong location or misplaced in Google Earth
- My CAD model is floating above or buried under the ground in Google Earth
- KMZ export from AutoCAD looks wrong or distorted in Google Earth
- Google Earth crashes when opening a KMZ file exported from Plex-Earth
- KML export is missing objects or some elements are not showing
- How to export a 3D model from AutoCAD or Civil 3D to Google Earth