[vbox-dev] IProgress_waitForCompletion gives error randomly.

[DavidW]

I need call IProgress_waitForCompletion after most webservice command, but I
got error on it randomly, obviously one such error will cause problem in the
consequence calls.

The error result is like

<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:vbox="http://www.virtualbox.org/"><SOAP-ENV:Body><SOAP-ENV:Fault><faul
tcode>SOAP-ENV:Client</faultcode><faultstring>VirtualBox error:
(0x2147944127)</faultstring><detail><vbox:RuntimeFault><resultCode>-21470231
69</resultCode><interfaceID>00000000-0000-0000-0000-000000000000</interfaceI
D><component/><text/></vbox:RuntimeFault></detail></SOAP-ENV:Fault></SOAP-EN
V:Body></SOAP-ENV:Envelope>

Any idea on the problem?

thanks