Could you possibly be getting stuffed up by the: 

#ifdef USE_5005THREADS
#error "5.005 threads not supported by Data::Alias"
#endif

[download]
in the Alias.xs ? You can determine if you do have 5.005 threads configured in by looking at the output of perl -V. If all else fails you can download the old module from backpan

/J\

In reply to Re^3: Seeking Data::Swap, now replaced by gellyfish
in thread Seeking Data::Swap, now replaced by AndyH

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