this usually is an indication that you don't have Java / JRE installed on the system you run your browser on.
Open a brwoser window and go to http://www.java.com and download a Java version which is supported with the software version you are running.
As per the BSM 9.23 manual BSM System Requirements and Support Matrixes:
Version 7 update 45. Later updates may be supported, but may require a BSM patch or workaround. Note: You may not be able to view all BSM applets with an earlier version of Java and you will need to download the latest version from the Java download site (http://www.java.com/en/download/manual.jsp) and install it. You may also have to disable earlier versions after download. To verify/manage running Java versions in Internet Explorer: Select Tools > Internet Options > Programs > Manage add-ons > Toolbars and Extensions, and locate the Oracle section. After making any changes, close and reopen the browser.
It might also be an issue with Flash, for BSM 9.23 you need Adobe Flash 10.1.
Later patches to this version may be supported, but may require a BSM patch.
As far as I know there is no patch out yet to support a higher JRE version than 7 u 45.
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