Clean installation has some bugs?

I´ve just installed 3.0.86.
When I try to add users first problem occure.
Using GUI, add user, filling in name, passowrd, repeat password, OK I get "Missing ´required´ attribute ´dissallowusermod´"
So, I set "Modify accout" to ´Dissallow´ and hits Save.
New message" disallowusermod: The value ´on´ is not boolean"
Hmmm....

Trying to activate FTP protocol....
New message" enable: The value ´on´ is not boolean"

Ok, maybe it needs a reboot.
Selecting Reboot gives new message ":The value is not an object"

I upgraded to 3.0.88. It worked.
Tried the above again - same problem.

HELP!

Thank You.
I switched borowser and it works.
Wierd problem!