Upgrade StorageOS X installer broken?
MacBook Pro running OS X 10.5.6
"Firefox could not install the file at ..zoter0-1.5b1.xpi
because: Not a valid install package
-207
"Firefox could not install the file at ..zoter0-1.5b1.xpi
because: Not a valid install package
-207
-
dstillmanThat generally means there was a network problem that interrupted the download. Restart Firefox and try again. If it still happens, clear your browser cache.