In Windows 64 bit two different versions of java exists: 32bit version and 64 bit version.
Since version 2.3.33 GOWrite requires 64bit Java in 64 bit Windows.
When downloading Java the default version offered depends on browser: When using 32 bit browser, 32 bit Java is offered for download. When using 64 bit browser, 64 bit Java is offered for download. Thus with 32bit browser one should be careful when selecting Java version for download. More information is available in download pages http://java.com/en/download/faq/java_win64bit.xml.