This affects: fMRI users using pulses from the MRI scanner with the Presentation software package

Does not affect: fMRI users who do not use pulses from the scanner or who use PsychToolbox / Psychopy.

For users who do use Presentation with MRI trigger timing, please see the instructions for changing your experiments to use the new, more reliable trigger capture device. These changes should be made immediately as the system is now active.

https://www.ynic.york.ac.uk/docs/TechInfo/Misc/ParallelPort#MRIPresentation

The changes are minor and should only take a minute to implement. Any trouble or confusion, please contact me directly.