Parts Disappearing from the game

[thetunnelrat]

I have .21.1 installed with MechJeb2, ISA MapSat Dev Build, ORDA, and NovaPunch 2. The game will be running fine then sometimes when I Revert to Assembly Building the game freezes up and then comes back with an error message stating that the parts can no longer be found. This includes the stock parts. Is anyone else having this issue? The only solution is to fresh install and put the mods back in. It is also worth noting that this seems to happen randomly.

[th3shameless]

where is your game installed? system folders dont tend to play nice with ksp. try putting it in your documents folder and running it from there

[thetunnelrat]

Currently on the desktop, ill try the documents folder. Thanks

[trbinsc]

A better place would be a new folder in C:, like C:\Games. I've also heard you should copy it, not move it.