Hello Gavin, You are probably getting this error because you are trying to access cells outside the maximum range in Excel. A Microsoft Excel spreadsheet is limited to 256 columns and 65,536 rows. This <a href=3Dhttp://digital.ni.com/public.nsf/websearch/23EF6DD43866726C86256D5C0= 0687E51?OpenDocument>Knowledge Base</a> has further information.
If you are interested in a more robust data tool for managing, inspecting, analyzing and reporting test Data, check out <a href=3Dhttp://sine.ni.com/apps/we/nioc.vp?cid=3D5050&lang=3DUS>DIAdem</a>. It can handle data sets with over 1 billion values. If none of these suggestions help, or if I=92m not correctly understanding your issue, please post the software and versions you are using, the applicable portions of your code, and any other information that may help, and I=92ll be happy to look further into it. Have a nice day! Robert M Applications Engineer National Instruments
