Looks like it is a known bug - I followed option 2 and it resolved my issue
Looking at your logfiles, I see you’ve hit a known bug in our current release related to texture material files linked via the Enscape Material Editor. Because the Enscape Material Editor adds additional material options outside of the native Sketchup options, the data is stored in the Program Files of the original machine. In previous versions, image files linked in the Enscape Material Editor were cleanly disconnected when the project moved from one storage location to another; however, this bug disrupts this disconnection and results in a corrupted image file instead.
In order to solve this, you will either need to:
- Update to our 3.5 Preview version, where this bug is addressed. Previews are unstable by nature due to them being unfinished products; however, this is the easiest method of fixing this.
- Manually review all textures in the Enscape Material Editor, looking for either yellow error warnings in the place of the texture image or transparency cutout textures that are png files. Clicking the “x” on any of these selections will disconnect the file data.