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KingSquitter has released another update to his GUI-frontend for popstation which he notes is the final release. Changes include effects to customized icons and fixed bugs in popstation.dll.
Just as a reminder - psx2psp doesn't make multidisc popstation EBOOTs correctly (not sure that applies to this version here in any case as this is an OLD thread). The LATEST psx2psp makes multidisc EBOOTs, but corrupts some data as it does so. This causes problems with FFVIII, for example. The latest advice for making multidisc pops EBOOTs is to use AutoPopstation 4.