vb.net - DataGridView ComboBox Cell Causes Program to Crash -


i have datagridview contains 6 columns , 50 rows, 1 of columns datagridview combobox. in collection property of datagridview in designer have entered of items in combobox. when clicking on cell first thing within datagrid works fine , collection populated within combobox.

the problem: problem occurs when enter information different cell (text) , leave cell , move on combobox. causes program crash, no exceptions or anything. program crashes in debugger. question has seen crash before, , if how did work around or fix it.

debugger crash information:

problem signature:
problem event name: appcrash
application name: client.exe
application version: 1.0.1.0
application timestamp: 51825708
fault module name: stackhash_69d8
fault module version: 6.1.7601.17725
fault module timestamp: 4ec49b60
exception code: c0000374
exception offset: 000c380b
os version: 6.1.7601.2.1.0.256.1
locale id: 1033
additional information 1: 69d8
additional information 2: 69d8f202107dcd312c72fa82cc714206
additional information 3: 917d
additional information 4: 917d990ad144e90eed233698961d2c73

combobox values: travel - air
travel - rental car
travel - taxi, bus, limo
travel - rental car fuel
travel - parking/tolls
travel - personal car mileage
travel - internet
lodging - room & tax only
personal - breakfast
personal - lunch
personal - dinner
entertainment
office supplies
equipment
software
computer
dues & subscriptions
postage
company - breakfast activity
company - lunch activity
company - dinner activity


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