I am getting the problem too here is the crash report
---- Minecraft Crash Report ----
// I'm sorry, Dave.
Time: 7/12/16 10:50 AM
Description: Exception in server tick loop
java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:592)
at java.lang.Integer.parseInt(Integer.java:615)
at drzhark.customspawner.environment.EnvironmentSettings.processEntityConfig(EnvironmentSettings.java:517)
at drzhark.customspawner.environment.EnvironmentSettings.registerEntity(EnvironmentSettings.java:428)
at drzhark.customspawner.environment.EnvironmentSettings.initializeEntities(EnvironmentSettings.java:271)
at drzhark.customspawner.utils.CMSUtils.addWorldEnvironment(CMSUtils.java:127)
at drzhark.customspawner.EventHooks.structureMapGen(EventHooks.java:196)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_22_EventHooks_structureMapGen_InitMapGenEvent.invoke(.dynamic)
at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)
at net.minecraftforge.event.terraingen.TerrainGen.getModdedMapGen(TerrainGen.java:29)
at net.minecraft.world.gen.ChunkProviderGenerate.<init>(ChunkProviderGenerate.java:66)
at net.minecraft.world.WorldType.getChunkGenerator(WorldType.java:149)
at net.minecraft.world.WorldProvider.func_76555_c(WorldProvider.java:66)
at net.minecraft.world.WorldServer.func_72970_h(WorldServer.java:654)
at net.minecraft.world.World.<init>(World.java:245)
at net.minecraft.world.WorldServer.<init>(WorldServer.java:97)
at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:62)
at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:92)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 138440968 bytes (132 MB) / 427884544 bytes (408 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 33 mods loaded, 33 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
UCHIJAA FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1614-1.7.10.jar)
UCHIJAA Forge{10.13.4.1614} [Minecraft Forge] (forge-1.7.10-10.13.4.1614-1.7.10.jar)
UCHIJAA CodeChickenCore{1.0.7.46} [CodeChicken Core] (minecraft.jar)
UCHIJAA NotEnoughItems{1.0.5.110} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.5.110-universal.jar)
UCHIJAA adminweapons{1.0} [Admin Weapons] (adminweapons-v1-mc1.7.10.jar.zip)
UCHIJAA animalbikes{1.7.10} [Animal Bikes] (AnimalBikes_1.7.10.jar)
UCHIJAA AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI-1.7.10-1.2.4.jar)
UCHIJAA BetterSprinting{1.1.3} [better Sprinting] (BetterSprinting MC-1.7.10 v1.1.3.jar)
UCHIJAA craftguide{1.6.8.1} [CraftGuide] (CraftGuide-1.6.8.1.zip)
UCHIJAA CustomSpawner{3.3.0} [DrZhark's CustomSpawner] (CustomMobSpawner 3.3.0.zip)
UCHIJAA DamageIndicatorsMod{3.2.0} [Damage Indicators] (Damage-Indicators-Mod-1.7.10.jar.zip)
UCHIJAA MoCreatures{6.3.1} [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v6.3.1.zip)
UCHIJAA fossil{1.7.10 Build 7.0.1} [Fossils and Archeology Revival] (Fossils_Archeology_Revival-1.7.10_Build-7.0.1.jar.zip)
UCHIJAA foxlib{0.4.0} [FoxLib] (FoxLib-1.7.10.jar)
UCHIJAA iChunUtil{4.2.2} [iChunUtil] (iChunUtil-4.2.2.jar)
UCHIJAA GraviGun{4.0.0-beta} [GraviGun] (GravityGun-4.0.0-beta.jar)
UCHIJAA InfernalMobs{1.6.0} [infernal Mobs] (InfernalMobs-1.7.10.jar)
UCHIJAA lucky{5.1.0} [Lucky Block] (Lucky-Block-Mod-1.7.10.jar)
UCHIJAA RadixCore{2.1.1} [RadixCore] (RadixCore-1.7.10-2.1.1-universal.jar)
UCHIJAA MCA{1.7.10-5.1.2} [Minecraft Comes Alive] (MCA-1.7.10-5.1.2-universal.jar)
UCHIJAA me{1.3.2.1} [More Enchantments] (MoreEnchantments-1.7.10-1.3.2.1.jar)
UCHIJAA AencEx{0.0.1} [AencEx] (MoreEnchantments-1.7.10-1.3.2.1.jar)
UCHIJAA moreplayermodels{1.7.10b} [MorePlayerModels] (MorePlayerModels_1.7.10b.jar)
UCHIJAA Morph{0.9.2} [Morph] (Morphing-Mod-1.7.10.jar)
UCHIJAA cfm{3.4.7} [§9MrCrayfish's Furniture Mod] (MrCrayfishs-Furniture-Mod-1.7.10.jar)
UCHIJAA MutantCreatures{1.4.9} [Mutant Creatures] (MutantCreatures-1.7.10-1.4.9.jar)
UCHIJAA OreSpawn{1.7.10.20.3} [OreSpawn] (Ore-Spawn-Mod-1.7.10.zip)
UCHIJAA PortalGun{4.0.0-beta-4} [PortalGun] (PortalGun-4.0.0-beta-4.jar)
UCHIJAA realmsofchaos{Alpha 1.0 pre 1} [Realms of Chaos] (realmsofchaos-Alpha_1.0.jar)
UCHIJAA Tails{$version} [Tails] (Tails-1.7.10-1.0.0.jar)
UCHIJAA TwilightForest{2.3.2} [The Twilight Forest] (twilightforest-1.7.10-2.3.2.jar)
UCHIJAA weaponcaseloot{1.2.12} [WeaponCaseLoot] (weaponcaseloot-1.2.12.jar)
GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
Profiler Position: N/A (disabled)
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'
Can someone help me plz