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Re: JLink problem, Mathematica 6, OSX, Java SE 6 (64 bit).
On Feb 10, 5:54 am, Scott Morrison <scott.morri... at gmail.com> wrote: > I'm having a problem with JLink in Mathematica 6, on OSX 10.5, with Java = SE 6 > (64 bit). In particular, I get error messages > > LinkConnect::linkc: > Unable to connect to LinkObject['/Applications/Mathema<<92>>/ > m0000011741", > <<2>>]. > InstallJava::fail: A link to the Java runtime could not be > established. > > when first loading JLink, and later running InstallJava results in > > LinkOpen::linke: Error 19 > InstallJava::launch: The Java runtime could not be launched. > > Going to Java preferences, I can switch back to J2SE 5.0 (32 bit) (but > not 64 bit), after which the problems go away. For performance > reasons, I'd really prefer to be able to use a 64 bit runtime. Does > anyone know of a fix for this problem? > > I don't have the same problem with Mathematica 7, but for now I'm having = some > mysterious problems in Mathematia 7 (my existing packages randomly hang..= .?) > that I'd like to be able to switch back for a while. > > thanks, > Scott Morrison Open the Info.plist in Mathematica.app/SystemFiles/Links/JLink/ JLink.app. Edit the Root/Java/JVMVersion, I changed mine to '1.5'. I can keep the system at Java6 64bit and Mathematica still works using the old version. Looks like 6.0.3 might fix the problem with Java6.