安装期间，我们在Install4J日志中有一些用户遇到此错误。关于可能导致这种情况的任何想法？ （Windows 7 64位）
[2:746] extracting Welcome.html (size 955)
[2:746] untaring JRE was successful
[2:762] JRE is packed
[2:762] checking jre\lib\charsets.jar
[2:762] Unpacking JRE
[2:762] jre\bin\unpack200.exe
[2:762] -r "jre\lib\charsets.jar.pack" "jre\lib\charsets.jar"
[3:11] could not create unpack process