Hi, thanks for your help! I have now the two instances of ser working ok. The vm ser instance also writes the message to the fifo and this is picked up by Sems. However, Sems is complaining about the "wrong FIFO interface version". Sems seems to pick up version 0.2. This matches what the ser proxy writes to the FIFO. I run ser 0.8.12 (stable version) and sems version 0.1.0 which appears to be the most recent. How can I make ser and sems agree on the FIFO interface version? Thanks, Mario -- The University of Stirling is a university established in Scotland by charter at Stirling, FK9 4LA. Privileged/Confidential Information may be contained in this message. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not disclose, copy or deliver this message to anyone and any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. In such case, you should destroy this message and kindly notify the sender by reply email. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind.