Resaved projects (Faulty error loading project)

I know this have been discussed many times on this forum.

A lot of people get the loading file error when using third parties plugins etc.

With all my faulty projects I reload every sample, sequence, program etc in a new project and save it and give it a new name. Unfortunately the error occurs in every resaved project.

what plug-in or vst are you using that is in all the songs you tried to resave?

this has only happened to me once.. I don't use vst's in the mpc software...
This happened before a live set too ... (soundcheck) I only had to reload the pgms and seqs ... I'm not sure what it could be.. i was using it with rearoute.. But even with reaper i wasn't using 3rd party plugins....

Several plugin will cause those errors. Amplitube, Fabfilter and sometimes Ozone.
I can reload every program, sample, seq etc in a new project and save it. Some plugins are already taken out of the new project or even when I delete all of them, I'll get that error when I restart the project.