My software use the ADO .NET provider and crash once or twice a day.
I searched on this tracker and my problem is very similar to
I used the provided tool (FirebirdNullExceptionReproduce.zip) to reproduce the problem.
I updated this tool with the latest version of ADO .NET provider (184.108.40.206) and the problem is still here.
I join to the issue the zipped tool updated with the 220.127.116.11 version.
Can you take another look for that problem ?