Missing Resource Error or Invalid file format error or Throwing error while load the file (master script) in QTP but same script was working properly , Now its showing invalid file Error?

There is two chances to happen like that.

1. Object Repository(.trs) file should be corrupted (if its corrupted we can't to anything )
2. Lack of memory space for QTP reports

Step to Solve second Possibility.

1. Open Run window
2. Enter %Temp% and press Enter Key.
3. Delete all file in Temp folder.

Now open the QTP and try to load the file , it will work.

QTP is not recognizing web objects or qtp 11 recognizing web objects as winobjects or QTP is not recognizing objects after upgraded from QTP 10 to 11 or Uninstalled and installed again?

Step to Resolve the Issue?

1.Open IE.
2. Go to Tools.
3. Select Manage Add-ons.
4. And select BHOManager Class ADD-On should be Enabled.