Can I get alittle insight please.

[SunnyDerp]

So I am getting a modpack together and I believe I have done it right. Its a private pack for me and my friends that has tekkit plus some hexxit and other mods. I followed the steps from lukes guide and i keep getting a

"Error Unzipping file for the following pack. error in opening zip file. Please consult modpack author"

I put this mod pack together cause my friends are idiots and dont know how to add the mods into tekkit. I am using dropbox to host the .zip file. Can someone shed alittle light on the subject.

Pack URL: http://www.technicpack.net/api/modpack/sunnyderp

Zip URL: https://www.dropbox.com/s/9lmw53s7c36129s/Tekxit.zip

MC Version: 1.6.4

If there is anything else I need to add just let me know.

[SunnyDerp]

...nevermind i figured it out.