Hello Holiday,

The only time I get the error that you are getting is when the path really was invalid. I was successful using a mapped drive letter in the path as well as a UNC.

The path in the error message looks odd to me with "file:\\" What do you have in the file path? I have:
"\\STSINC\TECH\SOFTRAK\DATA\SAMDATA\Scans\AttachToExistingEntries\AdagioScan-20170428103651.PDF"

Which is also known as:
"L:\SOFTRAK\DATA\SAMDATA\Scans\AttachToExistingEntries\AdagioScan-20170428103651.PDF"

I had no problem importing documents with spaces and dashes in the filename as long as I had the rest of the path right.