[MBG] Interior refuses to load onto level, and here's why (How to fix it)

Hey y'all.

Yesterday I created a level in Constructor, made in both .csx and .map formats and then converted to .dif file and placed into the marble/data/interiors folder. The interior has a size of around 1 megabyte.

Now, when I try to load it into the level editor featured in Marble Blast Gold, all I get is a refusal of the interior to load and the following text when entering the console mode:

Interior::read: incompatible file version format
Unable to read detail level 0 in interior resource
Unable to load interior: marble/data/interiors/hiway/hiwayragetest2.dif
common/editor/EditorGui.cs (1201): Register object failed for object (null)

Is there anything I should change in the .csx or .map file, or should I update Torque Constructor from 1.0.3 to 1.0.6?

P.S. I am a newbie, so I'm asking the ways to solve this problem.

I'm guessing you exported the dif file from Constructor. Marble Blast Gold can't read the versions of dif files that Constructor can export by default, so you'll either need to use Map2Dif ( Windows / Mac ), or this page that converts incompatible versions into one that MBG can use.