I found few issues while installing the trial version of webMethods 10.7 version:
1.)
E:\SoftwareAG107\IntegrationServer\instances\default10\config\fabric-agent.xml java.io.FileNotFoundException: E:\SoftwareAG107\IntegrationServer\instances\default10\config\fabric-agent.xml (The system cannot find the file specified)
2.)
12:31:49 warning APP_WARNING> FIP>>: Cannot install update(s). Finish installing your products, and then use Software AG Update Manager to install the update(s).
I think that TaskEngine and Optimize are not (yet) part of the Trial version.
Therefore the WmOptimize package in IS and the TaskEngine as well as some parts in the MWS navigation related to optimize are missing obviously.
Can you provide some screen shots from the Installer for component selection panels so we can verify this?