TestExecute install fails with Error code -1, seeing previous installation even though not exists

I see that the issue was solved by removing certain keys before installing the new product version at the advice of the Support team. This is a general idea, but if anyone's facing a similar behavior, they should contact support to get directions on what keys to remove.

this worked:

Our developers want you to remove the following keys before install new version of TE:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall{E1430B2E-6973-1440-8233-724BAC44AAF2}
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\InstallShield_{E1430B2E-6973-1440-8233-724BAC44AAF2}
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall{E1430B2E-6973-1450-8233-724BAC44AAF2}
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\InstallShield_{E1430B2E-6973-1450-8233-724BAC44AAF2}
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall{E1430B2E-6973-1460-8233-724BAC44AAF2}
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\InstallShield_{E1430B2E-6973-1460-8233-724BAC44AAF2}
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\SmartBear\TestExecute\14.0

Afterwards, try installing the latest release of TestExecute and see if the issue still occurs.