Send Mail: Error running operation 'Composing Mail'

Hello!

I have configured e-mail settings on RTC Server and enabled the e-mail notification. If I add a user to a Team or Project then an e-mail will be send to the user. However, if I try to send an e-mail to a particular user by using the "send mail" functionality of RTC Eclipse IDE (In View "Team Organization": Right click on user name -> "Send Mail") I get the following error:

Error running operation 'Composing Mail'
Expected scheme-specific part at index 7: mailto:
Expected scheme-specific part at index 7: mailto:

In the error log of RTC Eclipse client IDE following error message was entered:

!SESSION 2010-09-17 11:50:50.784 -----------------------------------------------
eclipse.buildId=I20100903-0816
java.fullversion=J2RE 1.5.0 IBM J9 2.3 Windows Server 2003 x86-32 j9vmwi3223-20091104 (JIT enabled)
J9VM - 20091103_45935_lHdSMr
JIT - 20091016_1845_r8
GC - 20091026_AA
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Framework arguments: -product com.ibm.team.concert.product -showLocation
Command-line arguments: -os win32 -ws win32 -arch x86 -product com.ibm.team.concert.product -data <path_to_workspace> -showLocation

!ENTRY com.ibm.team.collaboration.rcp.ui 4 2 2010-09-17 11:51:09.192
!MESSAGE Problems occurred while sending mail.
!STACK 0
java.net.URISyntaxException: Expected scheme-specific part at index 7: mailto:
at java.net.URI$Parser.fail(URI.java:2834)
at java.net.URI$Parser.failExpecting(URI.java:2840)
at java.net.URI$Parser.parse(URI.java:3043)
at java.net.URI.<init>(URI.java:604)
at com.ibm.team.collaboration.internal.ui.action.AbstractContactActionDelegate.composeMail(AbstractContactActionDelegate.java:245)
at com.ibm.team.collaboration.internal.ui.action.AbstractContactActionDelegate.composeMail(AbstractContactActionDelegate.java:411)
at com.ibm.team.collaboration.internal.ui.action.AbstractContactActionDelegate.run(AbstractContactActionDelegate.java:687)
at com.ibm.team.collaboration.internal.ui.action.AbstractContactActionDelegate$1.runProtected(AbstractContactActionDelegate.java:609)
at com.ibm.team.foundation.client.util.FoundationJob.run(FoundationJob.java:68)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

We are using:

Rational Jazz Team Server - Express-C
Server:
Jazz Foundation - Jazz Team Server 1.0.0.2 iFix 4 (I20100903-0816)
Rational Team Concert 2.0.0.2 iFix 4 (I20100903-0816)
Client:
Rational Team Concert Version: 2.0.0.2 Build id: I20100903-0816

Any help or ideas would be greatly appreciated.

Thanks in advance!