<DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">I wasn't able to isolate out the code that was causing the exception.</FONT></DIV><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0"><br></FONT><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">Below is the stack trace.&nbsp; This problem does not occur when running the app in DrRacket (the app works fine there), </FONT></DIV><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0"><br></FONT><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">but appears after having compiled the application via raco exe, when the server is handling a response. </FONT></DIV><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0"><br></FONT><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0"><br></FONT><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0"><br></FONT><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">Exception</FONT></DIV><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0"><br></FONT><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">The application raised an exception with the message:</FONT></DIV><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0"><br></FONT><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">link: namespace mismatch;</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp;reference to a module that is not available</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; reference phase: 1</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; referenced module: &quot;c:\program files\racket\collects\images\private\flomap-struct.rkt&quot;</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; referenced phase level: 0</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; reference in module: '#%embedded:g13787:flomap-stats</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; in: flomap?</FONT></DIV><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0"><br></FONT><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">Stack trace:</FONT></DIV><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0"><br></FONT><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">[running body] at:</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; line #f, column #f, in file #%embedded:g13787:flomap-stats</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">loop at:</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; line 605, column 8, in file c:\program files\racket\collects\racket\private\serialize.rkt</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">deserialize at:</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; line 600, column 2, in file c:\program files\racket\collects\racket\private\serialize.rkt</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">request-&gt;continuation at:</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; line 111, column 0, in file c:\program files\racket\collects\web-server\lang\web.rkt</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&lt;unknown procedure&gt; at:</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; line 57, column 10, in file c:\program files\racket\collects\web-server\lang\web.rkt</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&lt;unknown procedure&gt; at:</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; line 213, column 3, in file c:\program files\racket\collects\web-server\lang\abort-resume.rkt</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&lt;unknown procedure&gt; at:</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; line 58, column 2, in file c:\program files\racket\collects\web-server\dispatchers\dispatch-servlets.rkt</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">select-handler/no-breaks at:</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; line 161, column 2, in file c:\program files\racket\collects\racket\private\more-scheme.rkt</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&lt;unknown procedure&gt; at:</FONT></DIV><DIV ALIGN="LEFT"><FONT FACE="Verdana" SIZE="2" COLOR="#000000" LETTERSPACING="0" KERNING="0">&nbsp; line 96, column 6, in file c:\program files\racket\collects\web-server\private\dispatch-server-unit.rkt</FONT></DIV>