When it was generating the lightmaps i did see this in the error log using the 2.4beta3
L3DTxml_ReadFile error:
- cannot open file for reading
LoadCLI_XML error:
- error loading file
CL3DTApp::LoadClimateIni error:
- LoadCLI failed for 'C:\Program Files\Bundysoft\L3DT 2.4 beta3\Resources\Climates\temperate24\Temperate24-coastal.cli.xml'
CCalcProgress_dlg3::DrawGrid error:
- GetPixel failed
It appears the file is incorrectly named "..\Temperate-coastal.cli.xml"
note the missing "24". I've renamed it but have yet to re-run the lightmap generation. I dont really even use the lightmap so i wont bother.