Hi ruskin1,
I was able to run your VBA script from Old_DLL.zip, but the dialog returned an error "data\WW5DB.wdb". Do you still have the source code for ww5_DLL.dll, and if you do, would you be able to provide that? I used the source you provided for Test_DLL_VBA.prj, built it in LabWindows/CVI 2012, and ran TESTCVI_DLL_VB.xls in Excel 2010, causing a crash.
Can you verify that you are currently able to use a version of Test_DLL_VBA.prj, compiled in LabWindows/CVI 2012, which does not crash Excel?
Thanks,
Daniel
Daniel Dorroh
National Instruments