start up problems with java.lang.ClassCastException

I tried geoserver on ubuntu, it failed with a lot of errors about

java.util.ServiceConfigurationError: javax.imageio.spi.ImageReaderSpi: Provider it.geosolutions.imageio.stream.input.spi.FileImageInputStreamExtImplSpi could not be instantiated: java.lang.ClassCastException: Cannot cast it.geosolutions.imageio.stream.input.spi.FileImageInputStreamExtImplSpi to javax.imageio.spi.ImageReaderSpi

It seems to be caused by which jvm is being used, I found by switching from the openjdk to suns jvm resolved the problem for myself.

You can discover which jvm is being used by doing a java -version.

Which jvm gets used on a specfic platform is platform specfic issue, on ubuntu doing a update-alternatives --config java will allow to choose which is the default java virtual machine used by default.

Added by Dave Potts, last edited by Dave Potts on Aug 25, 2008
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