The Integration Manager for Microsoft Project logs all the data transfer related information including any errors and warnings in a text file called MSPIlog.txt. This file is located:

In Windows XP or earlier:
C:Documents and Settings<logged-in user's name>Local SettingsApplication DataRepliconIntegration Manager for Microsoft Project

In Windows Vista and later:
C:Users<logged-in user's name>AppData1LocalRepliconIntegration Manager for Microsoft Project

Note: Application Data , AppData, and ProgramData are by default hidden folders, so you will have to enable the Show hidden files and folders option in your operating system to view them. To find this option in Windows XP or earlier, select Tools > Folder Options… > View. To find this option in Vista, select Organize > Folder and Search Options > View.