UniTransaction throwing NullReferenceException

I'm trying to begin a transaction however on calling the .Begin() method throws a NullReferenceException and the stacktrace shows that it is coming from IBMU2.UODOTNET.UniTransaction.ServerTransaction(Int32 aKey).

Has anyone successfully used UniTransaction, if so is there something that i'm missing?

// note: Sess开发者_开发百科ion is already connected 
// and can do UniFile operations prior to this point.

UniTransaction transaction = session.CreateUniTransaction();
transaction.Begin(); // throws NullReferenceException

Note: The system is a UniData system and not a UniVerse system. Not sure if that makes a difference.

[Update 2011-07-08] Still having this issue. We are using UniData version 7.2 (I think 7.2.6 specifically) and using the UniObjects.NET version 2.2.3.7377.

Update: There has been a fix for the UO.NET Transaction Object as of version 2.2.5

You can download the lastest version in the Nov-2011 U2 Clients download.

IF that doesn't solve your issue, please get in contact with your support provider. I see no open bugs in system that relate to this issue.

Are you able to supply more code?

As a start, maybe moving the session.CreateUniTransaction before you do the session.CreateUniFile.

Not sure if it will help (because we are currently using the COM UniObjects not the .NET library), but that is how they have it in the example in uonet.pdf