You can see more details about the error (offending view, what is the problem) in the server log file.

It is sometimes more convenient not to work with OpenERP as a service when developing. If you run openerp-server without the --log-file option, it should output to stdout. (/path/to/openerp-server --config=/path/to/openerp-server.conf --debug )

In a general manner, when you develop, you better have to activate the debug logging's level, so you'll have more details about the errors in the logs.

To activate the debug level, you can start your server with the option --debug

More details about the logging options: path/to/openerp-server --help

[EDIT] more information about the log file