SAS watchout

When the task emosaic_prep is ran, it gives the following error:

Cannot exec "preqgti": No such file or directory at...

How to fix this problem?

The current version of emosaic_prep makes use of a new task preqgti to calculate the XMM-Newton stable pointings GTIs. This task was not included in SAS 15.0.0, therefore if you need to run emosaic_prep, please download and install preqgti-0.8 from here.