How to Fix "Blender Python Editor Crashes When Running Script"

If Blender crashes when running a Python script in the Editor, it can be caused by memory issues, infinite loops, or faulty code.

Here’s how you can troubleshoot and resolve the issue: First, check if your script contains any infinite loops.

A common cause of crashes is a Python script that runs in an infinite loop or takes an excessive amount of time to complete.

Review the script for any while or for loops and ensure they have appropriate exit conditions.

You can test your script step by step using the Python Console in Blender to isolate which part of the script is causing the crash.

If the crash is caused by a memory overload, check if the script is creating too many objects or data structures in memory.

This can happen if you’re creating a large number of meshes, materials, or other objects without proper memory management.

Use bpy.ops.object.delete() to clear unnecessary objects and free memory.

You can also use the gc module in Python to manually trigger garbage collection, which can help release memory from unused objects.

Another potential cause is faulty Python code, especially if your script makes calls to Blender’s Python API in a way that it cannot handle.

This could happen if the script attempts to modify the Blender scene in a manner that leads to a crash, such as improper object transformation, invalid data, or conflicting operations.

To identify and resolve such issues, carefully review the script for any unsupported operations or errors, and consult the Blender API documentation for proper function usage.

If the problem persists, try disabling other add-ons or running Blender with default settings to ensure the issue is not caused by conflicts with other plugins.

You can reset Blender to default settings by going to File > Defaults > Load Factory Settings.

After that, run your script again to see if the issue persists.

Additionally, try running Blender as an administrator or with elevated privileges, especially if your script requires access to system-level resources.

If the problem is related to your Blender installation, consider reinstalling Blender or updating to the latest version.

If you have custom Python libraries or packages installed, make sure they are compatible with your version of Blender’s Python environment.

By following these steps, you should be able to fix the issue of Blender crashing when running a Python script.