text: It id possibly because of three problems,\n\n1) Mostly your computer May be effected by Virus/spyware:\n                 Get good antivirus software(I prefer bitdefender8, it is free to download) and scan your computer. For spyware try spybot/Adaware.\n\n2)Because of badsectors on the drive you Install those applications:\n                 Uninstall those applications and install them on any other drive.\n\n3) File currupted: Reinstall the applications. Before installing clean registry using any reg clean utility like Tuneup utilities/system mechanic.\n\n\n\nCheers....!