Hi everyone. We are a small group of factorio players who love their modded savegames, as probably do you. We ran into issues with Rail Signal Planners Sliders as we did in another mod and we also had the conflict with module inserter Mod which disables any other GUI on modded items.
For the Rail Signal Planner there is just a few tostring() calls missing. But if you don´t want or can´t fix it yourself, I provide https://mods.factorio.com/mod/RailSignalPlannerNeo as a fixed alternative for the mod, that does exactly the same, but with working sliders. (If anyone want to see the fix necessary, you can verify it in https://github.com/neocult-de/RailSignalPlannerNeo/blob/main/gui/signal_tool_gui.lua ... there is a cast necessary for each .text-field in the code)
In case you are also using the mod module inserter, the Rail Signal Planner Gui is not available. That is an issue by module inserter, not Rail Signal Planner. If you want to have a fix, you need to go over there. I will try to get the solution in the main mod as soon as possible. If you can´t wait, like me, you can use my modified non-conflict version of it: https://mods.factorio.com/mod/ModuleInserterER It is the normal ModuleInserter Mod, but it has an additional check to not overwrite other mods item events.