These are the first three lines of error log

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[2010-06-17 16:11:26 [ERROR]] The variable LET is unbound.

#<The WEB package, 3/16 internal, 0/16 external>

#<MP:PROCESS Name "Hunchentoot worker (client: 127.0.0.1:1112)" Priority 0 State "Running">

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Can you tell me where is the error now ?

How can LET be a variable, it is a macro ?