KB274412: Javascript error "Unable to get property 'ty' of undefined or null reference" occurs when right clicking column headers while navigating folder structure in MicroStrategy Web 10.1

SUMMARY:
This issue has been classified as a defect by Strategy. The impact is limited to Strategy Web 10.1 when attempting to right click on column headers while navigating the folder structure. This issue has been fixed in Strategy Web 10.2.
 
SYMPTOM:
In Strategy Web 10.1 when users are navigating the folder structure they receive a javascript error after right clicking a column header as seen below.

Unable to get property 'ty' of undefined or null reference
at unknown function(A,E)
at unknown function isMenuShown(menuIte,selectedTypes)
at unknown function buildContextMenuRows(avItems,Meny,types,oTarget,loadOndemandMenuItems,modelID)
at unknown function buildContextMenu(B,H,E,C,F,G)
at unknown function displayContextMenu(oTarget,e,moveMenu)
at unknown function rightClick(D)

 
 
STEPS TO REPRODUCE:
To reproduce this issue in Strategy Tutorial do the following:

1. Access Strategy Web 10.1 and navigate the folders.
2. Right click one of the column headers such as Name, or Owner.
3. Notice the Javascript error immediately appears.

CAUSE:
This has been classified as a defect with Strategy Web 10.1. This issue has been addressed in Strategy Web 10.2
ACTION:
This issue has been addressed in Strategy Web 10.2 Upgrade to take advantage of the fix.