Unfortunately, AD GPO software pushes are hard to troubleshoot. Your best bet is to turn on install logging and reviewing the file for what went wrong. Interpreting that file can be tricky and well beyond the scope of this question.
Turning logging on is described in KB314852, which describes how to turn on Windows Installer logging via GPO.
Open the Group Policy
Navigate to Computer Config -> Admin Templates -> Windows Components -> Windows Installer
Double click on Logging, change setting as appropriate.
There may already be logs stashed in the system Temp directory, it'll start with 'msi' and end in '.log'; use time-stamps to figure out which is the one you're looking for.