The mod incompatibility page is for api 7 (while the page has been updated since API 8, it was only to modify the title to add the mod incompatibility (with api 7) on.
As for issues with JEID after version 54, im not aware of any. Its likely that its a issue with another mod that didnt show the light before you added JEID as the item id check was done before the Mixin check.
If i was you, i would create a new temporary server on your computer and then only have sponge and jeids in the mods folder. If there are still errors then we know it is JEID, if not then slowly add each mod back to find the issue.
Once found, report it to us and we maybe able to help you futher