problems sending email out of 'contacts and messages'

[ikansol]

hello,

i can't send mails out of 'contacts and messages'.

if i do so there is no error but nothing changes at all (eg nothing in 'send').

this is what i get in openmeetings.log:

ERROR 07-21 07:55:52.682 UserService.java 99218 885 org.openmeetings.app.remote.UserService [NioProcessor-1] - [composeMail]
java.lang.NumberFormatException: For input string: ":4"
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48) [na:1.6.0_26]

regards,
kai