Ok. But note : it happend right after OCX method call. Method works properly. Exact error location - BETWEEN OCX method call and next command. When I put the 'MessageBox("x")' command at this place, another error (C00005) was fired instead "pushjump" after MessageBox was shown (and still on screen).
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...
lnStartOrderResult = THIS.CommCWC.StartOrder(lnOrderMode, lnStartUpMode, This.lnSmartloadType, lnOrderWeight, lnDraftPreset, lnGateSetting, ;
lcOrderID, lcTicketNumber, lcVehicleID, lcBinID, lcProductID, lcProductName, lfProductDensity, lcCustomerName, ;
lcUnitTrain, lcExtraData1, lcExtraData2, lcExtraData3)

&& !!! Error hired here !!!

IF lnStartOrderResult <> 0
...

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It's a OCX of our company, it works already about 8 years. I heard about this error only once, but Last Friday it fired on my PC about 15 times. At monday whis situation was stopped without any changes in code.

PS. Hey, guys! What's going on? Ivanov, Golovlev, Shyshkov... Is it a Russian(/Ukraine/Bolgaria) newsgroup or what? (I'm first time here.)
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Thanks for your attention.