how can i reset app store?

[frippy]

i need to restore my mac store app
after trying to run mavericks over Yosemite (can't) my "intall" offers need resetting.
your help appreciated

greg

 

[jack1011]

not sure if I understand your question. Are you trying to reinstall apps from the App Store, but there is no "Install" option? I've answered this before on Yahoo Answers, and I'll copy and paste my answer here:

Sometimes, holding down the Option key and clicking the Update button will bring up additional options, including the option to install. I don t know why this only works sometimes so I can't guarantee it will work for you, but it s a good thing to try first.

If that doesn t work, quit the App Store. Then try opening Launchpad and delete iMovie if it s in there. After deleting, reopen the App Store and check to see if it has changed from "Update" to "Install".

If all else fails, you could rebuild LaunchServices. You can do that using Onyx.