Crystal Reports is often a 32-bit application even on 64-bit Windows. Ensure the 32-bit version of the DLL is in SysWOW64 .
Save the formula, drag it onto your report layout, and change its font style to the corresponding IDAutomation barcode font. Advanced Troubleshooting & Deployment Tips 1. The .NET Runtime Mismatch u25idautomation.dll crystal reports