Yes, this helped me - that's why I mentioned it. I was getting error messages that were related to file locks between failed installations. Deleting the directories helped me. I eventually got to a state between deleting and rebooting where rerunning install worked.Certainly- that only makes sense! Forgive me- for whatever reason I was thinking that my post would be directed to the original poster. Could I bother you again to elaborate on the process you used to delete the directories? ie. which directories, etc..
Unfortunately HP is not offering much help: (I would have thought that there would be some similarities with permission issues that I could address specifically but apparently not).
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We understand that your computer displays an "arguments are invalid" message when you try to install drivers for your Designjet Z3100.
This is a Windows error, which may indicate a permissions issue, or may mean that you need to install one or more ActiveX controls. Please check the Microsoft website for more information regarding this error message.
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