Hello stroke and welcome to the BC HijackThis forum. I do not see any signs of viruses or malware in the log. It is clean.
MS Office is kind of picky that way. If parts of it are installed it wants to install the rest. I woul dsuggest posting a question in the Business Applications
forum. They can assist with issues related to business applications. The HijackThis forum deals exclusively with infection issues and does not have a way to help with operating system or specific application issues.
Let them know that you have been to this forum and that no malware was found. Post as much detail about what is happening or not happening and I am sure they will be able to figure it out.