Keeps showing update

Question

In the last week whenever I go to the App store, it indicates one app has an update (DateLine), but I know this isn't an update because they company can't upload fixes several times in a day or every day for a week. I know the answer is just to ignore the sign there's an update (the red circle with 1 in the middle), but it's seem something needs reseting. Anyyone have this problem, and more so, found a solution?

Answer 1

I found out what was causing my problem (can't re-install an app that I deleted and which was purchased from the App Store). The app I was trying to re-install under Lion was Apple's Compressor v4 which is only available through the Mac App Store. However, even though I was booting from my one-and-only copy of Lion the Mac App Store was apparently getting confused by an old copy of Compressor v3.5 that was installed on another boot disk that I maintain for Snow Leopard. I'm running on a quad-disk Mac Pro so all four disks mount whenever I start the system. In any case, all I had to do was unmount the other disks and the Mac App Store then allowed me to install Compressor v4 on my Lion system.
The reason I was able to pinpoint this solution is that I wanted to run another Mac App Store app (Find Any File) and even though the Store said it was "Installed" I couldn't find the application in either the Lion Application folder or within LaunchPad. I then realized that the App Store was referencing the copy of that app that was stored on my Snow Leopard disk and unmounting that disk finally allowed me to install both Compressor v4 and Find Any File on my actual/current boot disk (i.e. Lion).
Now, the odd thing about this problem is that Compressor v4 wasn't installed on any of my disks, it was the older version of Compressor (v3.5.3) that apparently was preventing me from installing the new version 4 on my Lion system. In fact, Compressor v3.5.3 crashes immediately under Lion so that version of the app isn't even usable when I'm running Lion.
So, if you're having a problem with installation or app removal or updates from the Mac App Store try dismounting any other disks which you might have attached to your Mac and see it that solves your problem. If it does solve the problem then you can almost be assured that the cause of your difficulty is some file that is present on one of your other disks (i.e. app may not even be on your current boot disk).