Someone else reported exactly this problem in one of the other threads, you might like to check the other Poser 8 threads for any developments.

You don't need to install the legacy content.

Did you follow the instructions for merging the downloaded program and P8 content folders before running the installation program? These instructions are in the last download, the small PDF file.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)