I am seeing the same thing on my 1903 systems. If I us the 32 bit version it works fine but with the 64bit version you have to do a repair to get it to work. I have not opened Office and verified that by checking with ossp tool. In the reference image everything looks good but when rolled out all of the Office icons are blank. An online repair fixes it but it is a bit of a pain with 50 or more machines. Any ideas on whats causing it or possibly a work around. I am going to see if I can get it to deploy after imaging with the application pack but not sure if it works with Office 365.