Final Cut can not write file
I suddenly can not edit a project. Final Cut X is telling me that it can not write the file, due either to a permissions issue or insufficiant space. Yet, neither of these seems likely. Here is why:
Permissions: The project file is on an external drive and as such, permissions do not appear to be a relevant issue.
Insufficiant space: I have roughly 1/2 tb of available space on the external drive where the file resides. The file in question is several hundred gb in size, but given the amount of available space on the drive, I do not think that should be the issue.
Anyone got any suggestions?
iMac, OS X Yosemite (10.10.2)