http://code.google.com/p/pharo/issues/detail?id=4229 Try to execute the following in a PharoCore: Gofer new url: 'http://www.hpi.uni-potsdam.de/hirschfeld/squeaksource/SwaUtilities'; package: 'Animations'; load (you don't need Gofer, you can also use the MC browser directly). It looks like Monticello manages to install the package correctly, but then the image is frozen and CPU runs hot. The problem appears in MCPackageLoader>>basicload between the following 2 lines: methodAdditions do: [:each | each installMethod]. methodAdditions do: [:each | each notifyObservers]. And when I say between, I really mean between. The line execute just fine, but then the CPU runs hot and image freezes. What do you think? -- Damien Cassou http://damiencassou.seasidehosting.st "Lambdas are relegated to relative obscurity until Java makes them popular by not having them." James Iry