__gwt$exception: : undefined is not a function

I moved my code to smartgwtee5.0p don't see my main menu loaded. In Chrome dev tools, there's no error, but in SmartClient Developer Console (ctrl^Q) is the below in "Result" tab:

"16:34:16.754:INFO:Log:isc.Page is loaded
16:34:24.378:XRP8:WARN:Log:Uncaught exception escaped: com.google.gwt.core.client.JavaScriptException
(TypeError)
__gwt$exception: <skipped>: undefined is not a function
at BB(veyron-0.js@31)
at oI(veyron-0.js@570)
at Pwb(veyron-0.js@1386)
at kzb(veyron-0.js@89)
at Vo(veyron-0.js@542)
at Ep(veyron-0.js@192)
at sm(veyron-0.js@36)
at Ic(veyron-0.js@13362)
at eval(veyron-0.js@79)
at BGb(veyron-0.js@30)
at FGb(veyron-0.js@60)
at eval(veyron-0.js@46)
at isc_c_Class_fireCallback(http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@49)
at isc_Class_fireCallback(http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@302)
at isc.RPCManager.send.actionURL(http://127.0.0.1:8888/veyron/sc/modules/ISC_DataBinding.js?isc_version=10.0.js@39)
at isc_c_Class_fireCallback(http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@49)
at isc_Class_fireCallback(http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@302)
at isc_c_RPCManager_fireReplyCallback(http://127.0.0.1:8888/veyron/sc/modules/ISC_DataBinding.js?isc_version=10.0.js@77)
at Eec.$wnd.isc.RPCManager.fireReplyCallback(veyron-0.js@3706)
at isc_c_RPCManager_fireReplyCallbacks(http://127.0.0.1:8888/veyron/sc/modules/ISC_DataBinding.js?isc_version=10.0.js@120)
at isc_c_RPCManager_performOperationReply(http://127.0.0.1:8888/veyron/sc/modules/ISC_DataBinding.js?isc_version=10.0.js@13)
at isc_c_RPCManager__performTransactionReply(http://127.0.0.1:8888/veyron/sc/modules/ISC_DataBinding.js?isc_version=10.0.js@6)
at isc_c_RPCManager_performTransactionReply(http://127.0.0.1:8888/veyron/sc/modules/ISC_DataBinding.js?isc_version=10.0.js@20)
at eval(eval at isc__makeFunction (http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@122)
at isc_c_Class_fireCallback(http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@49)
at isc_c_Comm_performXmlTransactionReply(http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@27)
at eval(eval at isc__makeFunction (http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@122)
at isc_c_Class_fireCallback(http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@78)
at isc_c_Comm__fireXMLCallback(http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@409)
at _13(http://127.0.0.1:8888/veyron/sc/modules/ISC_Core.js?isc_version=10.0.js@1197)
Messaging endpoint not responding - remote debugging unavailable. To fix, make sure you have correctly registered the Messaging servlet in your web.xml"

I don't see any RPC processed and no pages at all connected when I look into Chrome dev tool "Network" tab
Can anyone explain what it could mean? I'm really stuck as I'm new to smartgwt.
Thank you in advance