Hi, I've been working on a bit of freeware on and off (which is probably my real issue). At some point my code began to crash when returning a deserialised object to calling code and I've now got some time to try and track down what's going on. One of my theories is that a change in Boost serialisation might be responsible. Can anybody please tell me if this library and/or its wide equivalent has changed since 1.6.0 and, if so, in which versions? Many thanks in advance for any information. Best wishes. Tim Burgess Raised Bar Ltd. E: mailto:tim@raisedbar.net tim@raisedbar.net M: +44 (0)7989 486976