Some of you may run into a known issue with what type of command lines for MSI/MSP based updates you can now use in the new System Center Updates Publisher 2011.  In previous version of Updates Publisher we have left the command line unrestricted, meaning you could put pretty much anything in there.  This caused a lot of problems due to invalid command line parameters (see here for more details) such as /qn or /q for MSI and MSP based updates. 

With Updates Publisher 2011 we decided to put validation on the field to force a name=value format, the only format allowed per WSUS/WUA.  In doing so we inadvertently put a restriction on the use of the dash “-“, meaning that if you have a command line parameter that includes the product key such as PID=1234-1234-1234-1234-1234 will be invalid. Another example is if you have a computer name with a dash in it (i.e. server=jason-pc) will also not work.  You will not be able to import or create such an update in Updates Publisher 2011.  This is a known issue with no current workaround.  We will look at addressing it in a future release.