[18:46:46 ERROR]: Couldn't unpack natives!
java.io.FileNotFoundException: Source 'C:\Users\Tan Jun Hao\AppData\Roaming\.minecraft\assets\objects\17\17491c8dd9511e9d848c92b4b7ae047aed164072' does not exist
at org.apache.commons.io.FileUtils.copyFile(FileUtils.java:1074) ~[launcher.jar:1.6.61]
at net.minecraft.launcher.game.MinecraftGameRunner.reconstructAssets(MinecraftGameRunner.java:272) ~[launcher.jar:1.6.61]
at net.minecraft.launcher.game.MinecraftGameRunner.launchGame(MinecraftGameRunner.java:119) [launcher.jar:1.6.61]
at com.mojang.launcher.game.runner.AbstractGameRunner.onDownloadJobFinished(AbstractGameRunner.java:186) [launcher.jar:1.6.61]
at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:122) [launcher.jar:1.6.61]
at com.mojang.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher.jar:1.6.61]
at com.mojang.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:86) [launcher.jar:1.6.61]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_101]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_101]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_101]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_101]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_101]

I have tried to delete .minecraft folder, disabled my Anti-virus and Firewall, and restarting my PC several times.
I tried to create a folder named "17" in the .minecraft\assets\objects folder, as I noticed that the folder "17" does not exist in there. But when I rename the "New Folder" to "17", it doesn't allow me to do that. It says "Error 0x80070103: No more data is available."
And so I thought that there was not enough space in my hard disk, so I created the New Folder. didn't rename it to "17", and placed a 10kb text file into the New Folder. This time, nothing popped out. It allowed me to place that file into the folder, but not rename a simple folder to "17".
strong*P.S , this happens only when I set my profile version to 1.2.5. Same goes for some old versions like 1.3.2, 1.5.1, 1.6.4. Technically, this happens to Minecraft version 1.7.2 AND below.*strong