Hi,
Unfortunately the upgrade of HSQLDB in 6.1.beta1 didn't work out too well, so I have reverted that. On a positive note, I fixed a severe memory leak.
Bugfix: Reverted to HSQLDB 1.8 due to performance issues and errors. If you previously installed 6.1.beta1, please restore your database backup when upgrading to 6.1.beta2.
Bugfix: Reduce memory usage. (Fixed a serious memory leak in the embedded Jetty used by the Windows, Mac and Linux packages).
New: Updated Dutch translation, courtesy of Toolman.
Sindre