Custom modpack - installation issues (access denied)

[Yoogain]

Hello!

I've recently created a modpack and connected it to a solder server. Solder seems to have linked fine, and everything downloads okay. However when technic attempts to extract the mod .zip files, it hits an error and does not extract. Technic logs show me this: 

**insert MD5 checksums passing here**

[B#347] 2016/05/22 22:08:53 [SEVERE] java.io.FileNotFoundException: C:\Users\<username>\AppData\Roaming\.technic\modpacks\fustration\config (Access is denied)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at java.io.FileOutputStream.open0(Native Method)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at java.io.FileOutputStream.open(Unknown Source)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at java.io.FileOutputStream.<init>(Unknown Source)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at java.io.FileOutputStream.<init>(Unknown Source)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at net.technicpack.utilslib.ZipUtils.unzipEntry(ZipUtils.java:95)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at net.technicpack.utilslib.ZipUtils.unzipFile(ZipUtils.java:145)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at net.technicpack.launchercore.install.tasks.UnzipFileTask.runTask(UnzipFileTask.java:59)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at net.technicpack.launchercore.install.tasks.TaskGroup.runTask(TaskGroup.java:86)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at net.technicpack.launchercore.install.InstallTasksQueue.runAllTasks(InstallTasksQueue.java:52)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at net.technicpack.launchercore.install.ModpackInstaller.installPack(ModpackInstaller.java:42)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at net.technicpack.launcher.launch.Installer$1.run(Installer.java:124)
[B#347] 2016/05/22 22:08:53 [SEVERE]     at java.lang.Thread.run(Unknown Source)

 

I can't imagine why access is denied. I run as an admin on the computer. I had a friend test the download on his computer to see if it was the same issue, and indeed it is, meaning its an issue with the .zip files? (I'm guessing.) Although the structure looks sound. Does anybody have any input on this? Much help would be appreciated!

LINK to the modpack --> http://www.technicpack.net/modpack/fustration.847924

**edit** --> The mods stay in the "cache" folder after downloading, and I can extract them manually, but technic can't extract them via the "install" button.

Edited May 23, 2016 by Yoogain

[Yoogain]

** SOLVED **

Turns out something went wrong with all of my .zip  files, causing them to be corrupt. After re-compiling, re-uploading, and re-hashing all of them, the install went though flawlessly.