Useally Happens when you look at an NEI item/recipe the FIRST TIME. Second time useally results in no issues. Causes seem to be using Tinker's Construct Crafting Station, and looking up other Modded Recipes, Not in a crafting GUI already, looking up the recipe the first time. We tested to see if it was jus modded Recipes, but a few randomly supported Mods, and Vanilla items will do it randomly.

NEI 1.0.4.90, NEIIntregration 1.0.7, NEI Addons 1.12.5.17
Forge 1291, Java 8, Custom Modpack, Minecraft 1.7.10

java.lang.NullPointerException: Updating screen events
at vazkii.botania.client.integration.nei.RecipeHandlerPetalApothecary.loadCraftingRecipes(RecipeHandlerPetalApothecary.java:121)
at codechicken.nei.recipe.TemplateRecipeHandler.loadCraftingRecipes(TemplateRecipeHandler.java:327)
at vazkii.botania.client.integration.nei.RecipeHandlerPetalApothecary.loadCraftingRecipes(RecipeHandlerPetalApothecary.java:115)
at codechicken.nei.recipe.TemplateRecipeHandler.getRecipeHandler(TemplateRecipeHandler.java:465)
at codechicken.nei.recipe.GuiCraftingRecipe.openRecipeGui(GuiCraftingRecipe.java:20)
at codechicken.nei.ItemPanel.mouseUp(ItemPanel.java:258)
at codechicken.nei.LayoutManager.onMouseUp(LayoutManager.java:166)
at codechicken.nei.guihook.GuiContainerManager.mouseUp(GuiContainerManager.java:365)
at codechicken.nei.guihook.GuiContainerManager.overrideMouseUp(GuiContainerManager.java:357)
at net.minecraft.client.gui.inventory.GuiContainer.func_146286_b(GuiContainer.java)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:306)
at net.minecraft.client.gui.inventory.GuiContainer.func_146274_d(GuiContainer.java)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1628)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:961)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

vazkii.botania.client.integration.nei.RecipeHandlerPetalApothecary.loadCraftingRecipes

The error is in Botania. None of my mods are even mentioned in the stacktrace...