[plt-scheme] Debugger error in eopl langauge with sllgen

 This was actually pointed out by a student when they tried  
 running the debugger on the following file 

 http://www.ccs.neu.edu/home/wand/csg111/interps/lecture02/grammar3.scm

 The error message I get on 301.5 is the following error: 

 procedure annotate-for-single-stepping: expects 6 
 arguments, given 5: #<syntax:1:0> 
 #<procedure:...ke/debug-tool.ss:511:23> 
 #<procedure:...ke/debug-tool.ss:518:23> 
 #<procedure:...ke/debug-tool.ss:522:23> 
 #<procedure:...ke/debug-tool.ss:481:46>

 A quick search on the mailing list archive did not give me 
 anything. Is there something I am missing in terms of 
 config options or is this a bug? 

 Thanks, 

 -- Theo