Snapshot and .vdi filenames first character truncated on reboot

[privacyplease147]

I only have one instance of this happening so far - in a Windows 7 Host, I have created a TrueCrypt container and mounted it at M:\. I created a Ubuntu 64-bit VBox running Linux Mint 16 at M:\Mint\Mint.vbox, and the Snapshots folder is at M:\Snapshots. The virtual hard drive is at M:\Mint.vdi.

After rebooting Oracle, the filename in VirtualBox Media Manager (but not the actual file name) truncates to M:
int.vdi, causing VirtualBox to believe the vdi does not exist anymore. I can fix this only by removing "int.vdi" from the VirtualBox Media Manager, then re-adding it to my Mint.vbox.

The same problem is happening progressively with the M:\Snapshots directory. Since the existence of this directory is apparently not checked, it iteratively removes the first character from the folder on each re-boot, so M:\Snapshots -> M:
napshots -> M:
apshots, etc.

Moving the Mint.vdi file out of the root directory has not fixed the issue, and in the most recent reboot the stored path went from M:\Mint\Mint.vdi -> M:
int\Mint.vdi.

As I was able to manually set the Snapshots directory, I tried switching the format to M:/Snapshots, as I suspected that the escape-character is not being properly sanitized. The directory was automatically changed to M:\Snapshots before reboot, and the problem persists.

I have 3 other Virtualboxes, 2 32-bit linux and 1 64-bit linux. This has not been a problem with either of those. One of them, Ubuntu3.vbox, is similarly stored in a mounted TrueCrypt volume, at E:\Ubuntu.vdi. Even when running both virtual machines simultaneously, then re-starting, the problem only occurs with the Mint installation.

The Ubuntu3 VBox was created using an older version of VirtualBox (some version before 4.2.8), the Mint VBox was created using VirtualBox 4.2.8 and the problem persists in VirtualBox 4.3.10.

[privacyplease147]

VBox.log (may not be useful)

[privacyplease147]

Screenshot of truncated filename in Virtual Media Manager

[privacyplease147]

Screenshot of untruncated filename in VirtualBox Settings

[privacyplease147]

Not sure how to edit this, but the input here seems to be interpreting double "\" as newline, but you should be able to see from the screenshot that It eventually replaces the first character with a second "\".

[Frank Mehnert]

Please could you also attach the machine-specific VM settings file (from your users directory / .VirtualBox) as well as the VirtualBox.xml settings file (from your users directory / VirtualBox VMs)?

[Frank Mehnert]

No response, closing.