I've found the cause of this!
It's a problem with brackets.
If you use:

exp(-pow((x-PosX1/LndScpWidth)/(L1/LndScpWidth/4),2))
                                                           ^^
everything is fine, but if you put more brackets in it, for instance with:

exp(-pow((x-PosX1/LndScpWidth)/((L1*4+W1*3)/LndScpWidth/4),2))
                                                           ^^^^^^^^^^^^^^
then something goes wrong.
It has nothing to do with what's inside, for this goes wrong too:

exp(-pow((x-PosX1/LndScpWidth)/((L1)/LndScpWidth/4),2))
                                                           ^^^^
but

exp(-pow((x-PosX1/LndScpWidth)/(((L1)/LndScpWidth)/4),2))
                                                           ^ ^^^
^
is fine again.

The only thing I can think of is the parser. Somehow the brackets
cause something weird.

Jaap Frank.

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