Getting Runtime error while adding Second page in Smartform.

I added 2 pages in smartform. When I worked with single page. smartform working properly. Now I added one more page(i.e Second page) I am getting runtime error. ("The current ABAP/4 program encountered an unexpected

situation". A RAISE statement in the program "SAPLSTXBC" raised the exception

condition "ERROR".) When I debug this standard program Something width problem getting on line number 110. Both width not matched so program raising exception. Can you please tell me to solve this problem what changes will I do in my smartform?