Updating your project in SmartSVN may fail on some systems with this message: '500 Internal Server Error'. This was noticed after a server migration (may 2013). To fix this issue, you may try to follow this howto:
'500 Internal Server Error' is a generic error related to http servers. It may occur in various cases and the howto below may not fix the trouble.
If it does not, waiting a few days and retrying to Update your project from time to time may let enough time to the DNS servers of your system to update themselves and to find the new migrated servers.
1. Select your project, Update, you get a '500 Internal Server Error'
2. Open the Repository Profiles Manager
3. Select the project profile > Edit
If you see several profile lines and you are not sure which is the one to be edited, delete all lines related to your project, then restart to 1. (Updating will create a profile line for your project)
4. Check and complete the following options:
Note: during this process, if the 'Master password' is proposed, choose 'Do not use master password'
5. Click Ok,
6. For SmartSVN version 8.x
Now try again to Update, you should not have the error any more.