ok the first problem is some users have the folder signatures and some have signatur. i have tryed making this but i does not seem to work

IF EXIST ("ExpandEnvironmentVars(%appdata%) + '\Microsoft\Signatures\")
; Redefine SigFile to point to the output file
$SigFile = ExpandEnvironmentVars(%appdata%) + '\Microsoft\Signatures\jansson.htm'
Del $SigFile

IF EXIST ("ExpandEnvironmentVars(%appdata%) + '\Microsoft\Signatur\")
; Redefine SigFile to point to the output file
$SigFile = ExpandEnvironmentVars(%appdata%) + '\Microsoft\Signatur\jansson.htm'
Del $SigFile