While pasting my configurations in .icewm/preferences, .icewm/keys, and in my .jwmrc, I get this:

This problem does not appear in .icewm/winoptions or .icewm/prefoverride (these files appear correctly)

Thanks,

Looks like one or more invisible characters"\n{tab}" inadvertently got copied into the content of the files.
To find and remove those, you might use geany editor, load .icewm/preferences, .icewm/keys
and, in the toolbar, click"View" then tick/enable"visible spaces".

Those unexpected characters may not have been present in the source text.
Possibly, the"Auto Indent" option was enabled when you pasted into the nano editor.

If the file contains relatively few lines, to fix I might just
sed"s/^[ \t]*//" -i ~/.icewm/preferences
then manually re-edit the file to inject any desired indentation.

thanks buddy, I will try that tomorrow