Due to changes in WarpIn package,

IF YOU HAVE OLDER VERSION SO! INSTALLED,
IT IS PRESSING DEMAND TO DEINSTALL IT BEFORE INSTALL NEW VERSION!!!

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Unfortunately, WarpIn doesn't work under some codepages.
For example, if current codepage is 1125, WarpIn not run at all.

In such case try change current codepage usung CHCP command, and
try install SO! once more.
