Can't import a file? OK. That's a routine issue in a system that handles hundreds of formats and sub-formats. It's either a) a bug in the data provided, b) a bug in the dataport, or c) user error.
The fastest possible way to solve the problem is this algorithm:
1) Do you feel comfortable importing into 9? If so, immediately file a Bug Report. That leads to a very rapid correction of anything required by a) or b) above. If it is c), no harm done. We've all been there.
2) Uncertain about your 9 skills? That's OK. We've all been there, too. It's smart and responsible to touch base quickly with friends in this forum to eliminate obvious instances of c), if you provide info people need to analyze the situation. If responders tell you to file a bug report, do that.
"I'm using 9, 168.2. This file imports weird: <insert direct link here to dropbox, etc., from which the file can be downloaded.> Documentation on the site claims it is a geotiff. I imported using defaults. Tips? "
Following the above algorithm would have solved the problem by now, probably the first day. Any tweaks required for a) and b) could have been put into the build that will come out today or tomorrow. Routine, quick, easy.
So... I urge everyone to keep it simple in such routine matters. Provide a sample file and help a solution happen quickly. There are many free services out there which enable you to provide public links to larger files for download.
[Edited to remove any tone of frustration...]