Os seguintes bugs no site do Chromium documentam o problema que você está vendo, infelizmente sem resolução:
The problem is that the DisplayVersion (MSI version) has limits on its format. It has to be in format X.X.X, whereas Chrome versions are X.X.X.X There is an algorithm to convert Chrome versions to MSI versions, but it's pretty complex.
See bug 58031 for a similar issue -- it would be nice to show the MSI version in the about dialog.
MSI DisplayVersion para corresponder à versão do Chrome