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Using Crystal Reports in ASP.NET on a 64 bit machine
The above scenario gave me the well-known could not load file or assembly error message. The assembly that couldn’t be found was log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=692fbea5521e1304. Or one of its dependencies of course… The situation in which I was getting this error message:
using the CrystalReportViewer in an ASP.NET application having the ASP.NET application hosted in IIS (the error did not occur on the ASP.NET Development Server) running on a 64 bit machine Log4net was available in the GAC, with the exact version and PublicKeyToken stated in the error message.