Slade3 TEXTURE1 Error

Hey guys, I need some help how to stop this Slade3 TEXTURE1 error.

You see, I'm trying to make this texture in the texture maker in Slade3 (I censored some stuff because that's secret for now): http://i59.tinypic.com/jr8j0z.jpg

But when I save, this happens to the TEXTURE1 lump: http://i57.tinypic.com/neg4tj.jpg

How did that happen? I also have version 3.0.2 in case your wondering.

"First aid" for SLADE3 errors: Save the wad, close it in SLADE3 and open again. This solves certain problems, because sometimes SLADE3 just misinterprets the lump type. For example it's known that it can misinterpret flats as Jaguar graphics or an Unknown type, maybe there's a similar error about TEXTURE1. In the game, it should work fine, but it the editor the lumps look bugged until you reopen the file.

If this doesn't help... Well, for an assurance, have a backup of your file before you do it.

Could you also see if it still happens in the latest beta? If so it's probably something that needs fixing, a TEXTURE1 entry shouldn't be misidentified as quake gfx.