Error: "There is a problem With Adobe Acrobat/Reader..." What is .MST file??

i following error message , looked in knowledge base, , there solution fixing error message. however, have no idea talking about. have downloaded customization wizard, have no clue following means:

a) create new transform
b) open created .mst file

i went c drive , opened program files. found adobe folder, couldn't find .mst file anywhere. lost??? below knowledge base solution:

error: "there problem adobe acrobat/reader..." when view pdf in browser (acrobat , adobe reader 8 on windows)
issue
when try view pdf in internet explorer, see error message, "there problem adobe acrobat/reader. please exit adobe acrobat/reader , try again." when click ok error, pdf opens outside of browser.

reason
when use adobe customization wizard create transform adobe acrobat 8 or adobe reader 8, , choose option "make acrobat default viewer if both acrobat , reader installed", or "make reader default viewer if both acrobat , reader installed", error occurs if computer not have acrobat or reader installed.

solution
create new transform , re-deploy acrobat or adobe reader.
start adobe customization wizard 8.
open created .mst file.
under installation options, select "installer decide product default".
save transform.
re-deploy acrobat or adobe reader.

additional information
when create transform in adobe customization wizard 8, installation options allow set default viewer pdf files. "installer decide product default" default setting , should used when uncertain if target machine has version of acrobat or adobe reader won't removed part of installation process. when installed silently using option, acrobat configured default viewer.

i think headed down wrong path. customization wizard use push out reader several hundred computers. mst package or transform file used accomplish task. unless person , trying deployment of reader solution not fit situation.

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