Anytimes a few interfaces MIDi don't send sysex data correctly for partial incompatibilty in sysex data . You can test to change MIDI interface or change to use eloader to USB mode directly.
You can probe to use Exclusive system librarian for works , but eloader works fine
http://www.midiox.com (alternative librarian exclusive system sofware)
and for last, try hard reset for MP-7 (lost your data) for if error it is in your initial upload, and load banks and patterns from :
here all patterns and libraries an manuals from EMU
i down loaded the mp7 patterns from here https://groups.yahoo.com/neo/groups/xl7/files/Command%20Station%20Data/
i used eloader with a midi man usb to midi converter. not sure how to down load these files without down loader