ZBrushCentral

unable to open zbrush 4r5.

Im working on something, when almost every tool stop working. Says unable to open the tool, then gives me a location on my drive for it. Zbrush crashes, then gives the same unable to open, location but this time from Zbrush itself. Any thing I can do, that I don’t need to download and reinstall?

I reinstall Zbrush, but my project has no redo history… XDDD Better than losing it all,.