Unspecified Error received when running all tests in suite

Hi Support,

Recently me and my colleagues installed Test Complete 14. We seem to get an 'Unspecified error' when running all the test in test suite. The first tests run ok and at some point durring the execution of one of the  tests Test Complete throws and 'Unspecified error' message and none of the following tests are executed. The tests run perfectly fine when runned independently. On the previous versions of Test Complete we didn't get this error (v10 & v12).

Any ideas why can cause this problem?

Thank you