Hi,

I am Unable to open a work instance of a particular work type in one of the environment, same instance is getting opened in other environment.

While trying to open the case i am  getting a blank screen with following message - Unable to open an instance using the given inputs

Error in pega alert file-

(Executable.java:4414)<CR>       ... 109 more<CR>]*

2015-09-23 09:36:24,796 GMT*8*EXCP0001*0*0*e6151c96a13bb029d152767fcf58e0d2*NA*NA*H148D45A63CA0CA1CCC4F6B7C252EAE26*md10106*Deere-MachineHealth-Work*MachineHealth:02.01.01*f8c31e6f315e2bd89e21f4b5a4c8f42f*Y*14*H148D45A63CA0CA1CCC4F6B7C252EAE26*396*WebContainer : 3*PS1__TABTHREAD1*Rule_HTML_Harness.Review.Deere_MachineHealth_Work_Event.Stream**[email protected]*Rule-Obj-Activity:ApplicationSetup*DEERE-DATA-ALERT GETALERTSBYTIME #20150707T102823.257 GMT Step: 8 Circum: 0*****NA*NA*Deere-MachineHealth-Work-BusinessRule-CF*pyWorkPage*Deere-MachineHealth-Work-BusinessRule-CF*pyWorkPage*getStream Rule-HTML-Harness:Review;java;RULE-OBJ-ACTIVITY @BASECLASS SHOW-HARNESS #20141104T090112.064 GMT Step: 6 Circum: 0;doActivity Rule-Obj-Activity:Show-Harness;Call Show-Harness;6 additional frames in stack;*ReadOnly=-1;FormError=;pega_attributes=;pyContentType=Work-;bExcludeLegacyJS=true;HTMLClass=Rule-HTML-Harness;pzPrimaryHarnessPageName=pyWorkPage;bPersist=true;LAYOUT_METHOD_NAME=simpleLayout_2;streamKeys={pyStreamNameEQUALSReview, pxObjClassEQUALSRule-HTML-Harness};pyStreamName=Review;InsHandle=DEERE-MACHINEHEALTH-WORK-BUSINESSRULE BR-4995262;portalThread=OpenPortal;portalName=pyCaseManager;EXPANDEDSectionHeader=true;dynamicContainerID=939e2ccb-4664-4d2e-a1d1-c8741962e9f0;RenderSingle=;streamKeys2={pzInputEQUALSNoInput, pyStreamNameEQUALSReview, pxObjClassEQUALSRule-HTML-Harness};AllowInput=false;pzHarnessID=HIDC9A67A35039554AAA8DD05B9E908F8B8;className=;KeepFixedVisible=false;threadID=PS1__TABTHREAD1;pzULabel=Cancel;HarnessType=Review;EXPANDEDSectionCore=true;headerButtonsAdded=false;HarnessPurpose=Review;action=openWorkByHandle;[email protected];threadFamilyName=;DisplayLockInfo=true;tabIndex=7;iconPath=cmicons/pyLightning.png;section_base_ref=;AlwaysShowFormLevelErrors=false;portalThreadName=OpenPortal;pyRecordKey=DEERE-MACHINEHEALTH-WORK-BUSINESSRULE BR-4995262;FieldError=;pyCustomError=;pzPrimaryHarnessPageClass=Deere-MachineHealth-Work-BusinessRule-CF;elementAction=OPEN;contentID=3e4696b3-cbf3-d978-bf11-93bb41da89eb;Action=Review;key=DEERE-MACHINEHEALTH-WORK-BUSINESSRULE BR-4995262;prevContentID=30c16ebd-fcd3-f102-a283-907dd1540dc4;AJAXTrackID=1;pzAKey=;CurrentWorkIndex=1;InHarness=true;label=BR-4995262;inStandardsMode=true;FrameName=pyWorkPage;prevRecordkey=DEERE-MACHINEHEALTH-WORK-EVENT MHE-6515879;Purpose=Review;*[MSG][Section 'FormErrorMarker' execution error on page 'pyWorkPage' of  class 'Deere-MachineHealth-Work-BusinessRule-CF'.][STACK][java.util.ConcurrentModificationException<CR>           at java.util.HashMap$AbstractMapIterator.checkConcurrentMod(HashMap.java:197)<CR>              at java.util.HashMap$AbstractMapIterator.makeNext(HashMap.java:202)<CR>     at java.util.HashMap$ValueIterator.next(HashMap.java:287)<CR>                at com.pega.pegarules.data.internal.clipboard.ClipboardPageImpl.getMessageCountAll(ClipboardPageImpl.java:4463)<CR>                at com.pegarules.generated.html_harness.ra_stream_review_50d7179a82f4ddb6313aa22d00ab0830.include_1(ra_stream_review_50d7179a82f4ddb6313aa22d00ab0830.java:2714)<CR>                at com.pegarules.generated.html_harness.ra_stream_review_50d7179a82f4ddb6313aa22d00ab0830.generatePegaHarnessDiv_6(ra_stream_review_50d7179a82f4ddb6313aa22d00ab0830.java:1756)<CR>                at com.pegarules.generated.html_harness.ra_stream_review_50d7179a82f4ddb6313aa22d00ab0830.execute(ra_stream_review_50d7179a82f4ddb6313aa22d00ab0830.java:674)<CR>                at com.pega.pegarules.session.internal.mgmt.Executable.getStream(Executable.java:4033)<CR>  

Any help is appreciated...