Hello!
The recent release of ReadyAPI 2.3 contains several changes that broke the integration with TestComplete. Specifically, ReadyAPI tests are still running correctly, but TestComplete misinterprets their results as failures. The issue is already fixed in the upcoming TestComplete 12.50 release (should happen within the next couple of weeks). If the issue is critical, you can either request a patch for the current version of TC from our support, or revert ReadyAPI to the previous release. Sorry for the inconvenience.
