Why Export to excel is making Ax hangs in TDS form while it's working in all other forms ?

Hi

In TDS form when i am trying to do export to excel,the ax is hanging whereas in all other forms it is working perfectly. I put the breakpoint in method performPushAndFormatting() of Class SysGridExportToExcel but before the cursor hits inside,ax hangs. But in all other forms i am able to debug this method then why this exprort to excel is not working with this TDS form ?

Found that

It was happening just because of one temporary column was there in user layer in the Form ->TaxWithHoldInquiryTrans_IN->TmpDirectTaxInquiryTable_In_Dimension[2]

Deleted and it solved the problem.