Since I installed the last version I get an error and I cannot do anything with the editor

The only way I got this working is by turning off 'Verify normalization' and 'Block high bit characters' in my Firewall. What have you done Adam that this causes a problem with the latest version? I saw something with high bit characters in Java from the CuteEditor directory that got no response causing something not to load.

Verify normalization. Select this check box to specify that requests with URLs containing escaped characters after normalization will be blocked.

Block high bit characters. Select this check box to specify that URLs with high-bit characters will be blocked.