Hi I'm also having the same random issue,
The error is happening in the method CheckBottomForIndentCell as you can see by the error. I know you mentioned the code looks like it shouldn't throw an exception, but it does randomly, no way of consistently reproducing. I believe the issue is the tableControl being null as the grid could be refreshing or the datasource being nulled out and re-added.
this is what causes it for me to happen the most is when we drop and re-add the datasource, not going into reason we do this. but this is usually what causes the issue.
HI AIPEX,
We are tried to replicate the reported NullReferenceException exception on our end. Unfortunately, we are unable to replicate the reported scenario. We prepared a simple sample and attached with this response. If you have any additional information or steps that could help us replicate the problem, please let us know. We are committed to resolving this issue and will continue to work diligently to find a solution. Thank you for your understanding.
Regards,
Chidanand
M.