Cerys mod adds a new science lab, new science bottle and a new infinite science but the lab doesn't have a slot for cryo bottles. Your mod adds cryo bottle to all infinite sciences. Since the new lab doesn't have a slot for cryo bottle then the infinite science can't be done in any labs due to no lab having the required slots for the research.

I'm sure there are other mods out there that add other endless techs and labs so it would make sense to scan through the labs to see if they have the required slots or not and add them if they are used for the relevant endless researches that your mod modifies.

After finding an unrelated bug in another mod I stumbled upon this discussion under Cerys: https://mods.factorio.com/mod/Cerys-Moon-of-Fulgora/discussion/676a382a9092b02711e000e2

It is currently impossible to export Cerysian science from Cerys and impossible to build regular labs on Cerys. Cerysian science was intended (in this mod anyway) to be used only on Cerys.

For these reasons, Cerysian science was not added to the base game lab. This mod also doesn’t have an obvious reason to add Cerysian science to other modded labs.

It’s no issue if other mods want to do this, or to make Cerys labs accept other sciences (even if those packs are not obtainable on Cerys naturally they can be cargo dropped.) The compatibility problems come when mods want to use Cerysian science packs for non-Cerys technologies, or change Cerysian technologies to require science packs the Cerys lab doesn’t naturally accept.

So perhaps there should be an exception for science done in that mod. I mean it is possible to import other kinds of science bottles to the planet but the theme of the mod seems to be it shouldn't be needed to do that. Perhaps make it a config option instead?

Thanks for the report. Now that Cerys 1.0 work is finished (I am the developer of that mod!), I pushed a compatibility fix for Hardcore Tech Tree. The setting 'Push back infinite research' in v1.1.1 no longer modifies techs that use the Cerysian science pack.