Re: GP Service Pack 5 will not install - installer does not run
I know it's been awhile since you last posted so you likely have resolved your issue already, but I had a similar problem and figure it can't hurt to share my fix. My problem was caused by not having the correct path for the service pack update to follow.
1. Click on Start and then click Run. Type REGEDIT and click OK.
2. Expand HKEY_LOCAL_MACHINE | Software | Microsoft | Business Solutions | Great Plains.
3. Under Great Plains, the DEFAULT directory is for the DEFAULT install.
The Inst01 directory is for the second instance of Microsoft Dynamics GP and so on.
4. Find the instance of GP you are trying to update. Expand it, and click Setup. In the Data column, take note of your AppPath. The GP folder you are trying to update must be located along this same path (e.g. C:\GP\GP10\).
Hope this helps