An exception occurred while trying to find the installers in the C:\WINDOWS\assembly\GAC_MSIL\EPiServer\5.1.422.122__8fe83dea738b45b7\EPiServer.dll assembly.
System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
Aborting installation for C:\WINDOWS\assembly\GAC_MSIL\EPiServer\5.1.422.122__8fe83dea738b45b7\EPiServer.dll.
An exception occurred during the Install phase.
System.InvalidOperationException: Unable to get installer types in the C:\WINDOWS\assembly\GAC_MSIL\EPiServer\5.1.422.122__8fe83dea738b45b7\EPiServer.dll assembly.
The inner exception System.Reflection.ReflectionTypeLoadException was thrown with the following error message: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information..
The Rollback phase of the installation is beginning....
Rolling back assembly 'C:\WINDOWS\assembly\GAC_MSIL\EPiServer\5.1.422.122__8fe83dea738b45b7\EPiServer.dll'.
Affected parameters are:
applicationid = /LM/W3SVC/1/ROOT
licensekey =
assemblyfolderpath = C:\Program Files\EPiServer\Manager\Download
rootdir = /
vppfolderpath =
logfile = C:\Program Files\EPiServer\Manager\Download/upgrade.log
assemblypath = C:\Program Files\EPiServer\Manager\Download\bin\EPiServer.dll
virtualdir = /
An exception occurred while trying to find the installers in the C:\WINDOWS\assembly\GAC_MSIL\EPiServer\5.1.422.122__8fe83dea738b45b7\EPiServer.dll assembly.
System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
Aborting installation for C:\WINDOWS\assembly\GAC_MSIL\EPiServer\5.1.422.122__8fe83dea738b45b7\EPiServer.dll.
An exception occurred during the Rollback phase of the EPiServer.Install.LazyAssemblyInstaller installer.
System.InvalidOperationException: Unable to get installer types in the C:\WINDOWS\assembly\GAC_MSIL\EPiServer\5.1.422.122__8fe83dea738b45b7\EPiServer.dll assembly.
The inner exception System.Reflection.ReflectionTypeLoadException was thrown with the following error message: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information..
An exception occurred during the Rollback phase of the installation. This exception will be ignored and the rollback will continue. However, the machine might not fully revert to its initial state after the rollback is complete.
Rolling back assembly 'C:\WINDOWS\assembly\GAC_MSIL\EPiServer.ContentChannelService\5.1.422.122__8fe83dea738b45b7\EPiServer.ContentChannelService.dll'.
Affected parameters are:
applicationid = /LM/W3SVC/1/ROOT
licensekey =
assemblyfolderpath = C:\Program Files\EPiServer\Manager\Download
rootdir = /
vppfolderpath =
logfile = C:\Program Files\EPiServer\Manager\Download/upgrade.log
assemblypath = C:\Program Files\EPiServer\Manager\Download\bin\EPiServer.dll
virtualdir = /
Line 150:
Line 151:
Line 152:
Line 153:
Line 154:
Cannot install files: The installation failed, and the rollback has been performed. [Unable to get installer types in the C:\Program Files\EPiServer\Manager\Download\bin\EPiServer.dll assembly.]
I get the exact same error message, while trying to install a brand new site on a Windows Server 2000 box, Episerver 5.1.422.122 with EpiServer Manager 2.0.19.4. .NET Framework 1.1 and 2.0 are installed, and the database is Sql Server 2000.
I've tried removing all content in download. I've tried both online and offline installation, I've tried with EpiServer 5.1.422.4, I've tried deleting Episerver-dlls in the GAC, and also tried installing Episerver-dll:s from another site in the GAC.
The upgrade.log is identical as the one posted earlier:
"The inner exception System.Reflection.ReflectionTypeLoadException was thrown with the following error message: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information..".
Any thoughts?
/ Thomas
At the EPiServer CMS SP1 installation/download page the following prerequisites are listed:
Installation on Windows Server 2000 is not supported.
Thank you. Obviously I never read the prerequisites ...
How about adding a dialog in EPiServer Manager? "Installation on this system is not supported, because of the following reasons: ..."
Cannot install files: The installation failed, and the rollback has been performed. [Unable to get installer types in the C:\WINDOWS\assembly\GAC_MSIL\EPiServer\5.1.422.122__8fe83dea738b45b7\EPiServer.dll assembly.]
Solution would be appreciated :)