TestComplete Can no longer see wItemList and wSelectedItems after Update to V14

[MattMauger]

TestComplete Can no longer see wItemList and wSelectedItems after Update to V14, breaking many of our tests written in V12.

This is in multiple object types (everything I can see where wItemList and wSelectedItems are availible). 

The test run picked it up but the Object spy gives an error as well. 

The error message is very general:

Error: Error
An error occurred.
Possible reasons:
1. The application stopped responding.
2. The application was compiled incorrectly (see the Open Applications topic in the help system).
3. An error occurred in TestComplete/TestExecute.

Technical information:
537 0x80070057 (The parameter is incorrect.)

The objects can still be clicked if the item in indexed, it just can't read the value. 

The software being tested has not changed since the last test run on V12

[tristaanogre]

What language is your application under test written in?

Obviously, the component type is some sort of select control but the specific control classification is important as well.  Is it Native Windows? Is it something like QT?  What's the component itself?

It could be that you had a custom object mapping or setting in your V 12 setup that did not translate into the V 14 conversion.  I'd go through Tools -> Current Project Properties and check the Object Mapping section and make sure everything is set there.
Also, go to File -> Install Extensions and make sure that all the items under "Desktop" are checked, just in case an application extension or component extension somehow got deactivated.