What does the output panel say?
The usual: Check free space on the drive, run as admin, make sure nothing else is using the file, don't work in a Dropbox folder.
Tried all these. Just reset my PC and transferred the files too.
The output panel says:
'Source Control Output will go here. If you have not turned on Source Control, you can find it in Main Options.
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature
Invalid data in index - incorrect header signature'