If possible, request a SP1 rollup.
The problem is that SP1 release is looking for particular strings in the USER_AGENT string of the browser. Unfortunately, these strings are not updatable by the user in the release build.
In the rollup, these strings have been moved to the web.config of ProcessManager so admins can modify them... it will look like this:
<add key="MobileBrowserStrings" value="midp,j2me,avant, ..." >
So if admins aren't concerned with mobile, they can set the line like this:
<add key="MobileBrowserStrings" value="" >
EDIT: Misspoke the 1st time... personally, I'd set the line to something that'll never happen in reality, like:
<add key="MobileBrowserStrings" value="FakeMobileStringYaddaBlah" >