@dkocher commented

Are you referring to a custom .cyberduckprofile as documented in Connection Profiles?

2f1f221 commented

Replying to [7601 szinobido]:

Setting a profile name with a character such as ":" (double colon) makes CD unable to login.
Sorry for misunderstanding: I meant the "Connection", or the item in CD's bookmarks page.

When you edit a connection, there is a "Nickname" (the second field, after setting a protocol, eg. WebDAV+SSL), this is the said field.

@dkocher commented

I cannot replicate this issue. Please send me the bookmark. (You can drag it as an attachment to this ticket or send it to [feedback@cyberduck.ch]).

@dkocher commented

The hostname set as webdav.google.com in the bookmark is not reachable.

2f1f221 commented

Well, for me also it is not reachable. I can give You all the IP's, logins and a temporary password. Yet, I think you wouldn't be able to access a server in my local network (behind all this walls of death), would you? I will try to setup a WebDAV account somewhere outside to get a clean test case.
OK - I have appended Ggoogledab.duck just as an example to show where I insert invalid characters in the form.