"Error 0x80070643: Failed to uninstall MSI package" in log file when uninstalling SigCaptX

Search engine results from the Internet would suggest that it could be that your .NET framework is corrupt or possibly your MSI software update registration.

The problem may be resolved by using Microsoft Fix It as per this article: https://support.microsoft.com/en-us/help/17588/fix-problems-that-block-programs-from-being-installed-or-removed

Please note that we can accept no responsibility or liability for utilities provided by third parties, nor can we guarantee that they will resolve the issue.