In 3.x conversion, the postconv operation converts the blocks of persistent
SortedCollections to the 3.x block class. However, if you run the postconv
using the argument that performs the conversion with more gems than you
have SortedCollections in your repository, postconv will fail.
Retry the postcov with a smaller number of gems. You may also contact
GemStone Technical Support for a method to install into your image.
Last updated: 3/5/13