Tnomic
Looking at your screen shot it appears your using V1.0? Am I correct in assuming that?
If you haven't, you really need to upgrade to a newer Versions like V1.20 or something
a little earlier....
https://github.com/LeeBamberTGC/FPS-Creator-Classic
https://www.thegamecreators.com/product/2001/page/archive/Files
As for your missing "thumbnail" picture problem, this appears to be clearly a problem
of a missing Thumbnail picture, or the .fpe file not pointing to a thumbnail pic? or both?
Every entity/segment needs 4 things to display properly and/or be usable in fpsc.
1- a bitmap pic 64x64px of the entity
2- an .fpe file (open a .fpe file for any simple entity under the "entitybank" folder and study it closely. It is basically a description
of the entity, what is does/can't do, and a path to it's texture and models mesh. Pretty simple stuff. At the very top you'll notice
an line that reads " desc = " such as "desc =crate" or "desc =house" this points to the name of the thumbnail bitmap.
The name of the bitmap must be the SAME! The name of the .fpe file you will notice is also the SAME! ) Make sense?
3- the model mesh itself ( in .x file format only) remember the .fpe has a line that reads "model =" such as "model = crate.x"
This mesh is usually in the same folder.
4- lastly the texture for the entity ( .dds, tga, png formats can be used, but mostly .dds) The .fpe also has a line that points to this
texture. It also is usually in the same folder.
If you haven't done so you should upgrade to a newer version, don't forget to install dx 9-c. It has a few missing files that DX-10 or 11 don't have.
best
My games never have bugs. They just develop random features..
Lots and lots of random features...