I just switched to Windows 8 with Strawberry perl.

So I installed a couple of modules via Stawberry perl´s cpan, and I´m getting errors and warning left and right.

As an example, I am trying to hook up a LeapMotion to perl using the company provided Device::Leap, and get errors like:

Use of uninitialized value $BUFF in string eq at C:/Strawberry/perl/si
+te/lib/Device/Leap.pm line 40.
substr outside of string at C:/Strawberry/perl/site/lib/Device/Leap.pm
+ line 115.

[download]

Which seems odd, considering that that module is not doing anything fancy - just a bit of socket reading. The authors even explicitly turned on warnings and strict, so they would have seen these errors, too.

Even more shockingly, I´m trying to talk to an Arduino using Win32::SerialPort, and I get errors like: 

Second Write attempted before First is done at ServoJoy.pl line 55.
Use of uninitialized value $written in numeric ne (!=) at C:/Strawberr
+y/perl/site/lib/Win32/SerialPort.pm line 1580.

[download]

Apart from the fact that serial communications arent working, the "uninitialized value" error seems out-of place for such a popular module.

On a hunch, I tried running the same programs from an elevated command window, but I get the same errors.

Is there something I am missing? Is this a Win8.1 issue? Some new perl version thing?

Edit: For future readers: Most of the issues seem to have disappeared after I switched to 32-bit Strawberry perl. Seems that Win32::SerialPort doesnt like 64bit perl. I would've thought that that isn't an issue anymore, but it is.

In reply to Strange errors in CPAN modules when running on Windows 8.1 by schweini

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