An Error Occured, Error attaching disk image: GDBus.Error:... when opening downloaded files in firefox, how to fix this?

An Error Occured, Error attaching disk image: GDBus.Error:... when opening
downloaded files in firefox, how to fix this?

Error attaching disk image:
GDBus.Error:org.freedesktop.UDisks2.Error.Failed: Error setting up loop
device /dev/loop0: Invalid argument (udisks-error-quark, 0)

That one above is the error Im having with my Linuxmint 15 Olivia, using
Mozilla Firefox for LinuxMint 1.0.

The error occurs when I am opening a downloaded file using the "Open
Containing Folder" context menu. and also when opening the c: drive of my
newly installed "Wine" installation.

I have 3 LinuxMint 15 machines with exact software packages installed. The
others are not having this error.

The machine that this error occurs from is installed in a Fake RAID0.