delphi and borland C++ builder, all version problem!!

I am working in a school, to maintenance many computers with different
configuration. I found that all version of Delphi and c++ builder will fail
after installing Japanese support for Chinese windows 95/98.
after installing Japanese support, both Delphi and bcb will cause a memory
sharing problem if I run a program twice. what's wrong with it? it's a
problem of Chinese windows, Japanese support or Borland's problem?