Original title: Error messageWhat does this message mean? "Runner error Invalid backweb version 1.1.50 - 887648OSL"

Hi,1. When do you get this error message?2. Did you make any software changes to the computer recently?Method 1.First I would ask you to run an online virus scan and check. Sometimes the installed security program might not be just enough. I also recommend you to update your security software regularly. a. Follow the link below to run the free online scan:http://onecare.live.com/site/en-us/default.htmb. Run the Microsoft Malicious Removal Tool.Microsoft Malicious Removal Tool - 32 bithttp://www.microsoft.com/downloads/details.aspx?FamilyID=AD724AE0-E72D-4F54-9AB3-75B8EB148356&displaylang=enMicrosoft Malicious Removal Tool - 64 bithttp://www.microsoft.com/downloads/details.aspx?FamilyId=585D2BDE-367F-495E-94E7-6349F4EFFC74&displaylang=enc. I would recommend you to install the free security software from Microsoft which is easy to install and updates automaticallyHere is the link to download it.http://www.microsoft.com/securepcMethod 2.After removing any spyware or a virus the program would require the spyware to be installed in order to run, without it you will get the Run Time error again. This program runs on startup so you will have to uninstall the program that had the spyware associated with it. We can use the clean boot troubleshooting to find this program.You are required to perform a clean boot to find the program that is causing this and then disable or remove it.How to configure Windows XP to start in a "clean boot" statehttp://support.microsoft.com/kb/310353/en-usNote: After you have finished troubleshooting, follow the steps as explained in the article to reset the computer to start as usual. Hope this helps.Thanks and Regards:Shekhar S - Microsoft Support. Visit our Microsoft Answers Feedback Forum and let us know what you think. If this post helps to resolve your issue, please click the "Mark as Answer" or "Helpful" button at the top of this message. By marking a post as Answered, or Helpful you help others find the answer faster.