Looking at the code it would appear you are trying to send with a bad priority (eg 0)

giuliano mereu wrote:
> I have this error when my process try to send a pulse with MsgSendPulse() to another specific process on another node.

> this is not the first pulse that my process send to that destination. Many other MsgSendPulse() have been already 
correctly sent. The problem present after some time.
> The called process still exist and is not blocked.
> I've check that the arguments passed to the MsgSendPulse() are the same successfully used before.
> 
> The EINVAL is not present in the library documentation of the MsgSendPulse().
> Can anyone explain me what could be the meaning of this error?
> 
> thanks,
> Giuliano
> 
> _______________________________________________
> OSTech
> http://community.qnx.com/sf/go/post33523
> 

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