I have been having issues connecting redirected drives into my Xenapp Server.
It seems there is a problem with the new Citrix Receiver where this has been disable for some reason.
So you can not open any documents published through XenApp from Xendesktop from any local or networked drives for your Xendesktop image.
The following registry key on your Xendeskop image will help you resolve this issue
32Bit Desktop Windows 7
64Bit Desktop Windows 7
Create the Registry Value:
Reg Type: REG_SZ
Add the Value: TRUE
If it already exists rename it to TRUE
I Spent well over a day trying to get this to work, thanks a lot Citrix 🙁