Request-file on Linux

Hello,
I'm working on https://github.com/angerangel/rebolide and if you download the rebolide.r file, you'll find a brand-new IDE for Rebol with syntax color, resizable.
On Linux I have few bugs, one on the font (I'm confident to resolve soon) and one on request-file.
Usually request-file works well, but with rebolide.r something goes wrong.
If you click on OPEN and click on a file in the file list of reques-file, you'll receive the following message:

Code:

** Script Error: Cannot use subtract on block! value
** Where: pane
** Near: subface/offset: subface/old-offset: id - 1

Can you figure out what involve the bug? No one script used by rebolide.r redefine id.

Yes, but the problem is the other panels that complicate VID, so a simple request-file crashes...

No, on linux it has a rebol interface that is messed by some VID modification of the special TAB panel or else.

Yes...