That means you've got two (probably different) versions of JSON in /perl/perl_for_siji and in the standard library locations (@INC), and the one in /perl/perl_for_siji appears to be broken somehow. There are different ways to try and debug and fix this, however, it's unclear to me why you even need libraries from /perl/perl_for_siji, so you'd need to explain your installation more for us to be able to give good advice.

In reply to Re^3: use 5.005 with perl v5.16.3 by haukex
in thread use 5.005 with perl v5.16.3 by sijaanh

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