MCA,
I tested the issue you raised with 4.1 beta and found that it will in fact search the current directory for kixtart.kix as does previous versions. The only change from previous versions is that it no lognger returns an error but rather spits out help.
I do not advocate the use of this search feature and would advise everyone to specify a full or relative path to the script.
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.