Cannot save branch texture.

Hi, I'm not able to save my branch as image in resolution higher than 512x512 (Render to Texture). When I choose 1024x1024 or 2048x2048 the following error message occurs:

System Memory Bitmap Error - Tried to read a surface which has no read permissions!
and then: Runtime Error 500 - Unknown image error at line 15197

Please help!

> System Memory Bitmap Error - Tried to read a surface which has no read permissions!

Just wild guessing here, but have you checked all the texture files being used for the trunk and the leaves.

Do all the files (diffuse, normal and roughness) have read permissions?

Also check the source texture's dimensions (width/height). Maybe they are too large (ref the memory error)

Again, just guess work from my side.

Good luck.