Today morning I received a notification messagefrom QTP when I started it, saying "New Critical Patch Available" (don't remind exact message), & I installed this patch. After this QTP is constantly displaying error message (refer attached file). I tried re-installing QTP 10 it didn't worked. Then I tried uninstalling QTP 10 completely & installed again. It also failed. Then I tried installing 9.5 & then upgraded to QTP 10. But this also failed.
Did anyone faced such a issue previously? Is there any solution for this?
I just installed it without issues (other than it takes forever and a day even though it's small and my machine is fast - HP should look into that).
If you are trying to remove cleanly I would suggest you use Tarun's QTP Removal Tool (you can find the link by searching the forum) - it works quite well and should allow you to successfully re-install.
That is no surprise - I don't know if you did what I did when you installed the patch last time but as it started to download, I always close QTP since I assume it would interfere with patch installation (the download/installer dialogs were left open, of course).