I can't access a folder using filesystem integration.

I'm having a number of problems with filesystem integration. As far as I know, they've existed in all released versions of Wuala. I'm sharing storage to create enough space to upload my picture library, and I'm using robocopy to "sync" data from my onsite store to the Wuala drive. I probably have about 16GB total data spread across ~6,000 files in various folders. I've only uploaded about 8GB worth of the data so far, but I'm already having problems.

When I browse to a folder within the Wuala client, I can view the contents just fine. When I browse to the same folder via filesystem integration, I get this:

"W:\username\Images\foldername is not accessible. The specified server cannot perform the requested operation."

There's only 177 pictures in this folder. There are no other files present in the folder. I've deleted the folder and re-created it via my robocopy run, but I still get the same error after trying to open it via the filesystem.