When building a gui with wxformbuilder for a python program; after a number of edits and re-builds I get the following error:
12:52:27: Debug: ....\include\wx/msw/private.h(697): 'UnregisterClass' failed with error 0x00000584 (class still has open windows.).
What did I do wrong and where do I start troubleshooting it/how do I fix it?
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