plowmanplow

All of your mods from Reika need to match. Your Dragon API and RotaryCraft mods don't match. Download the current matching versions from the author's website: https://sites.google.com/site/reikasminecraft/home

That pack works fine for me in my test environment. Please provide your API URL or Platform page.

NEIAddons serves no purpose on a server and should be removed. NEI has been causing crashes exactly like that when placing anything spawner related (regardless of mod or vanilla) since the first 1.7.2 version. It has not been fixed (as far as I can tell) in the latest 1.7.10 versions. Try removing it from the server. The only thing that removing seems to do is that you can't "trash" things by dropping them on the NEI item/block region while it cheat mode. No great loss (although slightly annoying).

Those both appear to be valid Solder API links. Mine looks the same.

Forge/MC 1.6+ does not use the coremods folder in any way. All mods should be in or below the mods folder. Remove the coremods folder from your modpack archive. The PokeCycles mod has some things wrong with it. You can't even scroll through the mods list without the game crashing. I would recommend removing it. You have Zan's Minimap mod for 1.6.2. You need the 1.6.4 version, or a different Minimap mod.

Stop posting huge error reports in the forum here without it being in a spoiler tag or in a pastebin. Read this for conflict resolution:

For AM2 on 1.6.4, as of v1.2+ of AM2, it does. The 1.7.2 version of the AnimationAPI is the one that seems to not be behaving itself in SMP. The 1.6.4 version seems fine. Also, OP's pack doesn't have AM2 in it.

https://copy.com/hv4mHtf3mxu6?download=1

You are missing the dep-loaded mods which get placed into the mods1.6.4 folder. You should include these mods in your modpack archive so that the client doesn't have to get them at runtime. (things like Forge Multipart, Code Chicken Lib, etc.) You have two different versions of: CodeChickenCore, IndustrialCraft 2, Iron Chests, Not Enough Items, OptiFine You have outdated versions of CoFHCore/ThermExpansion and ProjectRed. Both should be updated. You have no config files in your modpack archive. This is always bad and often fatal. This post has some useful information about where config files come from and the general practice of building a pack: Address all these issues and come back if you are still having difficulties.

Aether II for 1.6.4 (latest) is here: http://www.aetherii.com/downloads

Golem World: Directly from the mod author's MineCraftForum post you can find every historical version of the mod back to version 1.0.0b from the middle of July 2013. http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1290866-1-6-x-opensource-golem-world-now-for-1-7 . Click the "Changelog" button at the bottom of the post.

You have Golem World mod for Forge/MC 1.7.x. You need to get Golem World 1.0.1. You have no config files in your modpack archive. This is always bad and often fatal to a modpack. This guide for using my BareBonesPack has some good information on config files: http://forums.techni...ng/#entry506458 The default generated config files (see previous bullet point) have almost 20 block ID conflicts which must be resolved before the pack will function. Those three bullet points should look very familiar as they are identical to the ones I posted previously. You need to be addressing the issues reported with your pack before coming back for more assistance.

Your ZIP archive is broken and won't even extract manually using WinZip 14. The file that is causing the error is "aether_1.5.2_1.0.jar". Try re-creating the ZIP archive. You should not be including the minecraft.jar file in your modpack.jar file (in the bin folder). It should be removed. Without Aether mod for 1.5.2 (since I can't seem to easily find a download for it) and with Millenaire v5.0.1 included in a new ZIP archive (which I used to replace your broken ZIP) the pack launches successfully. On another note, what was your thought process for deciding to create a 1.5.2 pack. There are at least 1.6.4 versions of all of your included mods and most of of them have 1.7.2 or even 1.7.10 versions.

Modpacks in the launcher each have their own folder structure so there is no cross contamination between packs. You can click the Options button with the inventory open (bottom left) and change the NEI settings for inventory to "Recipe Mode". This will make it just show the recipe rather than give you the item when clicking on things. If you have poor impulse control you can even edit the NEI config files to make it so you can't change the settings from inside the game

You should not include the modsrei_minimap folder or its contents in your modpack archive. It will overwrite local client's key mappings and waypoints. The files "ThermalExpansion.recipes" and "vanilla.recipes" in the mods folder belong in the configmachinemuserecipes folder. What are you using to create the modpack archive? Your ZIP archive is 38,284,251 bytes in size. When I simply extract the file (using WinZip-14) and then create a new ZIP archive with the contents my file is 38,031,256 bytes in size. If I replace your ZIP archive with mine in the cache folder the pack extracts and launches just fine. If you have an option when making the ZIP archive you should always choose "legacy compression" to ensure compatibility. Also, I award you 1000 "awesome points" for doing an MD5 sum comparison on the files

I have given you very specific details about what needs fixed. Additionally, the link I provided is a straight forward how-to on creating a modpack using my BareBonesPack. I'm not sure how I could be more direct than that.

@oden the fish: Please start a new thread in the Server Op Swap Shop forum. This thread is more about the specifics of the OP. Also, the link you posted returns a 404 (file not found) so please post updated links as well as a link to your custom modpack page or API URL in your new post.

Everything except the leaking worlds is fine. Are you using the Forge server or MCPC+ for your server binary?

Try removing Millenaire, download the latest version of the mod from the author for your version of Forge/MC and re-add it to the pack. This happens all the time. Sometimes reinstalling Millenaire fixes things.

DOH! My bad. I somehow missed the "I added Mo'Creatures" statement in the OP (must have been that inverse video text). Sorry, Munaus. I thought we were dealing with stock BTeam. @ic3scr34m: Please provide a link to the Technic pack page or API URL for your custom modpack.

Don't start a new thread for the same server/client/issue. I've already responded in your existing thread.

Conflict resolution: I already did write a small how-to for fixing ID conflicts. That is the link I posted previously. Without a link to your Technic pack page or API URL it would be difficult to comment on that last post.

The contents of your modpack archive are in a subfolder. The main folders (bin, config, mods) should be at the top level of the folder structure inside the modpack archive. You have Useful Pets mod but not the required dependency mod SpaceCore. You have Golem World mod for Forge/MC 1.7.x. You need to get Golem World 1.0.1. You have no config files in your modpack archive. This is always bad and often fatal to a modpack. This guide for using my BareBonesPack has some good information on config files: The default generated config files (see previous bullet point) have almost 20 block ID conflicts which must be resolved before the pack will function.

Client Pack: You still have at least a couple dozen item ID conflicts which need to be fixed. You should not include the rei_minimap folder or its contents inside of the mods folder. This can overwrite client configs for key mappings and waypoints. You should not include the IC2 API in your mods folder. Remove it. You should not include the Inventory Tweaks API in your mods folder. Remove it. You should not include the Mystcraft API in your mods folder. Remove it. Flans Mod provides little value without adding some weapons packs. Client-Only mods which must be removed on the server: StatusEffectHUD Damage Indicators Dynamic Lights OptiFine ReiMinimap CommandAPI Hide Names Mods which should work in SMP but must be removed on both client and server because they are improperly coded: Superheroes Unlimited I believe some of the item ID conflicts in the client, and the removal of the mods on the server are causing a mismatch between the two. You will need to resolve all the conflicts and then build the server using this guide: Come back if you are still having difficulties.

The launcher will rename your download to "slugname-version.zip". You have a 1.6.2 version of ReiMinimap instead of the 1.6.4 version. You have no config files in your modpack archive. This is always bad. This post has come information about config files: Other than that is looks okay.