After exporting your preset you could place the .fhp in both the "presets" and "PrivatePresets" folder to see if that changes anything.
For further information:- Did you update the Preset Sync (using a download provided by Raz in February 2017)?
- Did you start having this issue after updating the Preset Sync?
Hello! Thank you for your input and eagerness to help, however turns out that I missed the obvious with not realising that my file just exceeded the 2 MB limit. Such a stressful situation for something so simple!
@ Others that read this, if you happen to fall upon this problem, check the file size of the FHP, and if it exceeds 2MB limits, try resizing the files or changing their format to .jpg.