go to the Tools menu / render manager, in there you’ll see where you’re render files are going, check and delete accordingly…
trashing prefs:
go to Library/Preferences/Final Cut Pro user data. in there, remove the three files with FCP icons, ie: prefs, obj cache and prof cache.. in the folder just prior to the user data folder delete the com.apple.FinalCutPro.plist file. restart your machine.
all this basically serves to clean out your system of any weirdness that might be happening within FCP.. it usualy works too. the FAT32 issue outlined above could be a culprit too…
hope it works…
Joe Haughey
https://www.editmule.com