First of all enabling logging is not required, because we have provided logging facility in Sitefinity trough the HelthMonitoring section in web.config. Default log file is App_Data\sitefinity.log
For the first error we suppose that the access rights for ASPNET were not set correctly during the installation, or there are old assemblies from a previous installation. To clear up the possible reason, please uninstall Sitefinity beta3, delete all folders under the Sitefinity3.0 directory and reinstall it by leaving all settings unchanged. Please check the following after installation:
- You should have administrative privileges on your local machine
- Directory Program Files\Common Files\telerik\web should not contain any config files
- Account <yourmachine>\ASPNET have full access rights for Program Files\Common Files\telerik\Sitefinity3.0
Please, let us know how it goes.
the telerik team