An error occured while preparing the installation. Try running this application again.

Hi

I have the same problem after formatting my disk and trying to reinstall Yosemite

Did you manage to solve this problem and if yes, how ?

Thanks

If possible, set the system clock as instructed here. If you can only start up in Recovery mode, see below.

Select Get Help Online. Safari will launch. While in Recovery, you'll have no access to your bookmarks, but you won't need them. Load this web page.

Triple-click anywhere in the line below to select it:

date 0801000014

Copy the selected text to the Clipboard by pressing the key combination command-C.

Select

Utilities ▹ Terminal

from the menu bar. A Terminal window will open. Paste into the window by pressing the key combination command-V.

Wait for a new line ending in a dollar sign ($) to appear below what you entered. If it doesn't appear, press return.

Quit Terminal to return to the main screen. Try the installation again.

I am trying to install Yosemite cleanly but after I formatted my disk, I can't install the system. It said " An Error occurred while preparing the installation. Try running this application again. "

The Log:

Oct 20 15:02:06 localhost InstallAssistant[418]: Can not connect to /var/run/systemkeychaincheck.socket: No such file or directory

Oct 20 15:02:06 localhost Unknown[397]: 2014-10-20 15:02:06.566 InstallAssistant[418:16544] Failed to connect (keyReceivingView) outlet from (IASetupWindowController) to (PUKDiskPickerHorizontalView): missing setter or instance variable

Oct 20 15:02:06 localhost Unknown[397]: 2014-10-20 15:02:06.566 InstallAssistant[418:16544] Failed to connect (loadingDistProgress) outlet from (IASetupWindowController) to (NSProgressIndicator): missing setter or instance variable

Oct 20 15:02:06 localhost Unknown[397]: 2014-10-20 15:02:06.566 InstallAssistant[418:16544] Failed to connect (loadingDistView) outlet from (IASetupWindowController) to (NSView): missing setter or instance variable

Oct 20 15:02:06 localhost Unknown[397]: 2014-10-20 15:02:06.567 InstallAssistant[418:16544] Failed to connect (subtitle) outlet from (IASetupWindowController) to (NSTextField): missing setter or instance variable

Oct 20 15:02:06 localhost Unknown[397]: 2014-10-20 15:02:06.567 InstallAssistant[418:16544] Failed to connect (keyReceivingView) outlet from (IAContentView) to (PUKDiskPickerHorizontalView): missing setter or instance variable

Oct 20 15:02:20 localhost Unknown[397]: 2014-10-20 15:02:20.525 InstallAssistant[418:16562] ***storageTaskManagerExistsWithIdentifier:withIdentifier failed: Error Domain=NSCocoaErrorDomain Code=4099 "Couldn’t communicate with a helper application." (The connection to service named com.apple.nsurlstorage-cache was invalidated.) UserInfo=0x7f99e7226a00 {NSDebugDescription=The connection to service named com.apple.nsurlstorage-cache was invalidated.}; {

Oct 20 15:02:20 localhost Unknown[397]: NSDebugDescription = "The connection to service named com.apple.nsurlstorage-cache was invalidated.";

Oct 20 15:02:20 localhost Unknown[397]: }

Oct 20 15:02:20 localhost Unknown[397]: 2014-10-20 15:02:20.528 InstallAssistant[418:16561] ***cachedResponseForRequest:key:handler failed: Error Domain=NSCocoaErrorDomain Code=4099 "Couldn’t communicate with a helper application." (The connection to service named com.apple.nsurlstorage-cache was invalidated.) UserInfo=0x7f99e60a1d20 {NSDebugDescription=The connection to service named com.apple.nsurlstorage-cache was invalidated.}; {

Oct 20 15:02:20 localhost Unknown[397]: NSDebugDescription = "The connection to service named com.apple.nsurlstorage-cache was invalidated.";

Oct 20 15:02:20 localhost Unknown[397]: }

Oct 20 15:02:22 localhost InstallAssistant[418]: GetDYLDEntryPointWithImage(/System/Library/PrivateFrameworks/CacheDelete.framew ork/CacheDelete,CacheDeleteCopyPurgeableSpaceWithInfo) failed.

Oct 20 15:02:22 localhost Unknown[397]: Keyboard Layouts: duplicate keyboard layout identifier -16899.

Oct 20 15:02:22 localhost Unknown[397]: Keyboard Layouts: keyboard layout identifier -16899 has been replaced with -28673.

Oct 20 15:02:22 localhost Unknown[397]: Keyboard Layouts: duplicate keyboard layout identifier -16900.

Oct 20 15:02:22 localhost Unknown[397]: Keyboard Layouts: keyboard layout identifier -16900 has been replaced with -28674.

Oct 20 15:28:33 localhost InstallAssistant[418]: Got error in writing to /Volumes/Macintosh HD/OS X Install Data/minstallconfig.xml

and I tried:

1. Reset the date in Terminal;

2. Presr command+option+P+R on start like 20 times;

3. Try running this application again and again and again;

None of these work.