[SOLVED] FormBuilder Write Results to Flat File - Unable to obtain lock for file

[AmandaBTO]

I use the FormBuilder a lot (it's great, thanks) but this is the first time I've tried using the Write Results to Flat File.  The help file says the flat file will go in modules/FormBuilder/output but the field properties have Directory to save file in: as my uploads directory

Where is this file going to be saved?  In either case, I've got all directory permissions chmod'ed to 777 and I'm still getting:
Sorry! There was an error handling your form submission.
Error. Unable to obtain lock for file.

Little help?

Thanks
Amanda

[AmandaBTO]

Well look at that, I had bad data in my cms_module_fb_flock table and once I cleared that out it worked just fine

ps - it's using the location in the field preferences uploads/filename.txt