Thanks for responding! I checked my network tab, and it seems like the function compiles with no issues/errors. Actually, it doesn't look like anything gets passed through the function.
This was the response I got.
throw 'allowScriptTagRemoting is false.';
//#DWR-INSERT
//#DWR-REPLY
var s0={};var s2=[];var s3=[];var s4=[];var s1=[];s0.CSVfiles=s2;s0.Excelfiles=s3;s0.ExcelcompilerOutput=null;s0.XMLfiles=s4;s0.XMLcompilerOutput="No Files";s0.CSVcompilerOutput=null;s0.Excelsuccess=false;s0.XMLsuccess=true;s0.CSVsuccess=false;
s2[0]="MultiColumnCsvImporter.java";s2[1]="MultRowCsvImporter.java";s2[2]="SimpleCsvImporter.java";
s3[0]="SimpleExcelImporter.java";
dwr.engine._remoteHandleCallback('52','0',{data:s0,hasMessages:false,messages:s1});