Button macro problem

[xikes]

Hello.
I have a problem.
Well, basically I've created two buttons with custom scripts - one, that creates and exports layer state of current file, and another one, that imports the layer state saved with the previous button.
Here's the problem. When I open a file and try to export the layer state using my button, it doesn't work. It only works after I open and close the CUI customization window (and only by clicking somewhere on the toolbar and selecting "Customize..."). The weird part is, that I don't have to change anything in CUI settings, I can just click cancel and after the CUI window has closed, my macro buttons work. Why is this? What exactly changed after I opened and closed the CUI customization window? Is there a way to solve this, so it wouldn't be necessary to open the CUI window?
Here's how the comandline window looks in both cases:
Before opening and closing the CUI
http://i126.photobucket.com/albums/p116/xikes/ls_er.jpg
After opening and closing the CUI
http://i126.photobucket.com/albums/p116/xikes/ls_ner.jpg

Here's the script, I used for the buttons:
Export:
^C^C-layer A S layer_state^M EX layer_state;"$M=$(getvar,DWGPREFIX)"layer_state.las""";;;^C^C

Import:
^C^C-layer A I;"$M=$(getvar,DWGPREFIX)"layer_state.las""";R;layer_state;^C^Cchange ALL^M P C BYLAYER;;^C^C

I'm using AutoCad 2007LT.

Note. the last part of the import button simply changes the color of everything to bylayer.

[Tyke]

When you use "$M=$(getvar,dwgprefix)"layer_state"" it will return a string with the path of your drawing in it. When this string is evaluated in the command string the \ (backslashes) are used to pause for user input.

When I tried out your macro for layer state export it paused for user input directly after the double inverted commas.

[xikes]

Well, it works on 2007 LT version (under certain conditions, as described above).
But yeah, when I tried later at home on 2011, it, kinda, doesn't work either way.

I'm starting to think, I misunderstand the function of quotation marks in macro scripts and diesel expressions. Can someone briefly explain this to me?

[Tyke]

Try looking at this article and also parts 18 and 19 too:

http://www.upfrontezine.com/tailor/tailor17.htm