Received this error on my client when using RIS in combination with a Broadcom driver.
I first received the 000000BB error when using an older Broadcom driver. The 000000BC was attributed to something else..

I was testing with the Flexprofile kit by Login Consultants on my home Citrix server and during testing I kept getting this error in my eventviewer:
Windows cannot locate your roaming profile (read only) and is attempting to log you on with your local profile. Possible causes of this error include network problems or insufficient security [...]

I’m keeping a list of Softgrid errors I’ve encountered in the past for reference:
Softgrid 3.x errors: Error code: xxxxxx-xxxxxx09-0000E019 According to MS, this is what happens: This behavior can occur under the following condition.

An application with same Package [...]