1- Post the LLBLGen Pro version + buildnr. The LLBLGen Pro version and buildnr are retrievable from the window title bar of the designer or from the About box of the designer
2- When it's a problem occuring at runtime, post the Runtime library version. The runtime library version is obtainable by rightclicking the SD.LLBLGen.Pro.ORMSupportClasses.NETxy.dll in windows explorer and then by selecting properties and the version tab. The version is then enlisted at the top as the fileversion. It has the typical format as 2.0.0.YYMMDD, or starting in 2007, the format 2.0.YY.MMDD
3- When an exception is thrown, post the stacktrace. An exception without a stacktrace is worthless. We can't help you if you don't post the stacktrace.
4- Post the template group + .NET version you're using. It's essential for us that you specify if you use Adapter or Selfservicing and also which .NET version.
5- Post real code. ALWAYS post real code when you want to illustrate where something went wrong. We can't work with code which contains obfuscated or cooked up names. If you can't post real code because it is violating an NDA, you've to mention this in your post