There are 3 configuration files in cuteeditor installation,

 

CuteSoft_Client\CuteEditor\Configuration\Security\Admin.config

CuteSoft_Client\CuteEditor\Configuration\Security\Default.config

CuteSoft_Client\CuteEditor\Configuration\Security\Guest.config

 

Please do the following test:

1. Modify "filenamePattern", restore it to the default value in all of these 3 files. Does it work fine?

2. If you remove the following line, does it work fine?

<security name="filenamePattern">^[a-zA-Z0-9\._\s-\#]+$</security>

3. When you upload one file every time, test it several times with different file, does every file have this issue or only some specific file have this issue?

 

Regards,

Eric