In the Microsoft Project (MSP) New Driver, some projects hang opening at the step "Writing to XML". If you look at the XML file when this issue occurs, the XML file loads partially and a symptom you'll see is that the XML ends in a time phased (<TimephasedData>) section.
This issue is caused by DE37239.
This issue is fixed in CA PPM 15.4.
Workaround: Rebaseline the project in PPM, then the project should open.
To rebaseline the project:
1. In PPM, click on the link to the Project
2. From the Project Properties drop down, select 'Baseline'
3. Click 'New' and enter the required information
4. Click 'Save' or 'Save and Return'