Just a little warning when installing the feature pack. Make sure your build number is correct.
If you already have a previous version of AX 2012, the installer doesn’t recognised the client needs to be updated. I also struggled to update the AOS as it required a new installation.
What to check
Use this list to make sure the build number is correct.
Right click on the AOS and client exe and get the build number
What if it is wrong
If the build number is wrong and the installer doesn’t recognise it. You can run the update executable on the install disc. This should pick it up.
One last comment. Just to be sure everything is built correctly. I like to empty out the XppIL folder. Then start your AOS and generate CIL.
C:\Program Files\Microsoft Dynamics AX\60\Server\DynamicsAx2012\bin\XppIL
For some additional info on the feature pack. Check out my previous post.