Finally, I deleted all Sims 3 with Eps and Sps this morning and re-installed them after saving the Sims3 folder on my desktop. After patching 1.26 version, I got a message,"There was an error during startup. Please see the Log for more details." So I tried to open the game with TS3W in Bin folder but it says 'unable to start'.
So I thought it could be the patch problem. I visited TS3 official home, and got a manual patch link from Technical help. After the manual patch, I got the same message.
So I removed the Sims3 base game and re installed and completed the automatic patch as well but still have the same problem. Even not able to start the game.
Is there an idea to solve this out please? If I go back to 1.24 patch after un-installing Pets, would it be the good idea?