A pretty common error in Vault 2014 is the random occurrence of following error message when opening Inventor files from Vault Explorer and it is pointing to the Inventor project file:
"Unable to Get / Checkout Files"
"Vaultproject.ip. An error occured while attempting to retrieve a file:"
You can finally not open the file and usually after a few further tries the file can get opened successfully.
Developers were able to find the root cause of the issue and this get fixed in a futuere SP/Update.
During that you can use following workaround:
1. Close Vault Explorer.
2. Edit the Vault Explorer configuration file (located at C:\Program Files\Autodesk\Vault Professional 2014\Explorer\Connectivity.VaultPro.exe.config)
3. Any place within the section <appSettings> add the following line:
<add key="NumberOfSimultaneousDownloads" value="1"/>
4. Re-start Vault Explorer
Warning:
the downside of this workaround is that it may reduce performance. This workaround changes the client to work on downloading one file at a time (rather than many at once).
The default value is 3.
The reduction in performance would probably only be noticeable when attempting to get a large number of files at once.