stacking error

[jediassassin]

Hello, I downloaded all the parts required to run JK2Radiant. Unfortunately when I double clicked the JK2Radiant.exe file, my Norton Crash Guard detected a "stacking error". Does anybody know if this is a problem with Norton or if there is a way to fix this error. I desparately want to create maps so please reply quickly. Thank you,

jediassassin