安装 RVCT 3.1 时报错，请大侠帮忙看看

sidukongjian

小弟在安装RVCT 时，报如下的错，请大侠帮忙看看是怎么回事

Badly encoded UTF-8 character (overly long encoding) at 174 in .\fwos\src\fwunic
od.c
Badly encoded UTF-8 character (malformed header in leading byte) at 146 in .\fwo
s\src\fwunicod.c
Badly encoded UTF-8 character (malformed header in leading byte [no trailing zer
o]) at 149 in .\fwos\src\fwunicod.c
Bad shorten at 659 in .\fwos\src\fwstring.c
Error: Launching the ARM Installer has failed

This ARM Product does not contain an installer. It instead relies on finding
one on your computer from a previously installed product.

Unable to locate a suitable JVM(tm) to run the installer with.

The ARMROOT environment variable which helps locate this installer is not set.
Please either
   A) (re)install a suitable ARM product
or
   B) manually set your ARMROOT environment variable to the full path of the dir
ectory containing your previous ARM product.

failed to find cleanup.exe
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