I've had the problem that if I executed on Win7:

perl myprog.pl a b c
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the program got the parameters (in @ARGV) correctly, but if I executed:

myprog.pl a b c
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the program would NOT receive the parameters. I searched the web for a solution and soon found that it was no ActiveState perl problem but more likely a filetype association problem in Windows (Win7). However all solutions changing the

assoc .pl=Perl
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and the

ftype Perl="C:\Perl\bin\perl.exe" "%1" %*
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or changing stuff in the registry still did not solve the puzzle for me. I did notice that the assoc .pl was not used somehow because if I added assoc .plx=Perl and renamed my program to myprog.plx

myprog.plx a b c
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worked perfectly ! So then I read this problem on the Microsoft forum were the Win7 "feature" Default Programs was mentioned, I found the solution to my problem:

Open Default Programs by clicking the Start button , and then click "Default Programs".

Select "Associate a file type or protocol with a program" and select ".pl" and click on "Change program". There was already a Perl Command Line Interpreter specified as Recommended Programs but instead I clicked on Browse and selected the Perl.exe myself. After closing the "Associate a file type ..." screen,

myprog.pl a b c
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executed like a charm, all parameters were correctly retrieved by my program. Hope that helps ...

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