Thank you for the provided stack trace and log file. Does this error occur every time you execute the test list? From the log I see there is a test as step inside the 'Automation.ChartOfAccount' test, which i believe is the main reason for the error. Unfortunately this error is generic and we won't be able to troubleshoot your problem based on it alone. We need to reproduce the problem locally. So would you please send the test project along with a description of the necessary reproduction steps.
If you consider this information to be too sensitive for a public forum. Please go ahead and open a support ticket. Unlike a forum thread support ticket is completely confidential, just make sure the support ticket contains a reference to this forum thread.
Hope to here from you soon!
the Telerik team