Stub Error suddenly coming up

[RichardofYork]

I've had an MTS object working fine for about a week:&nbsp;&nbsp;Suddenly it's going weird, and if I've changed anything I can't think what it may be.<br><br>The class is written in vb.&nbsp;&nbsp;It's a regular stateful class which I've made stateless by taking its variables and properties and putting them into a string which gets passed back and forth between the client and the server on specific calls.<br><br>However, now whenever I access one particular property (which happens to be a date property) for the second time (!) I get &quot;Method '~' of object '~' failed&quot;.&nbsp;&nbsp;When running in debug it identifies this as being &quot;Method 'Intro_Date' of object '_cContact' failed&quot;, and when you put the object into debug as well the point of failure is when the property exits.<br><br>the first time it works:&nbsp;&nbsp;The second time it fails as above:&nbsp;&nbsp;The third time it says &quot;The stub received bad data&quot;.<br><br>The metadata string gets passed back and forth the whole time.&nbsp;&nbsp;The class receives it as a variant, but converts it to a string once it arrives.<br><br>Any clues?