Cannot decode data，It seems like spp crashed

Hi,

Your project appears to be corrupted. This can happen if you have corrupted resources in your asset panel, if you do not have enough space on your disk, or if there were a problem with your hardware during the save.

Unfortunately, there is not much to be done when an entire project is corrupted, but in the future, please make sure you have enough space on the disk where you are saving both for your project and your temporary cache files. If you have a huge project, you may need more than 15 GB for temporary cache use. You can change the temp cache location in Edit > Settings > Temporary Files > change the location for your Cache Directory.

You can track your cache usage in the right bottom of Painter's window: when it becomes red, it means you have less than 5GB left, and if Painter (or another software) uses all of it, it might crash.

You can also check for autosave files either just next to your project, either in the location you chose in Plugins > autosave > configure ( by default, the autosave files are located in Documents\Adobe\Adobe Substance 3D Painter\autosave )

Regards,

Geoffroy SC