[Android Software Development] zarere:
I got it.Here is the logcat log.

http://pastebin.com/iVciLN4G

Here is only the BlankStore part log:

I/ActivityManager( 2425): Start proc 5753:com.android.vending/u0a63 for activity com.android.vending/.BlankActivity
D/BlankActivity( 5753): Accounts: 1
D/BlankActivity( 5753): Account: com.android.vending.account.Account{type="GooglePlay", login="*e*t*5*7*e*t*5*7@gmail.com", password="********", androidId="*c*f*5*0*0*5*4*4", deviceName="m0", sdkVersion="22", operatorAlpha="VIVACOM", operatorNumeric="28403"}
D/BlankActivity( 5753): Accounts initialized.
D/BlankActivity( 5753): BlankStore initialized.
D/OpenGLRenderer( 5753): Use EGL_SWAP_BEHAVIOR_PRESERVED: true
D/Atlas ( 5753): Validating map...
D/libEGL ( 5753): loaded /system/lib/egl/libEGL_mali.so
D/libEGL ( 5753): loaded /system/lib/egl/libGLESv1_CM_mali.so
D/libEGL ( 5753): loaded /system/lib/egl/libGLESv2_mali.so
E/ ( 5753): Device driver API match
E/ ( 5753): Device driver API version: 29
E/ ( 5753): User space API version: 29
E/ ( 5753): mali: REVISION=Linux-r3p2-01rel3 BUILD_DATE=Tue Jul 22 19:59:34 KST 2014
I/OpenGLRenderer( 5753): Initialized EGL, version 1.4
D/OpenGLRenderer( 5753): Enabling debug mode 0
I/Timeline( 5753): Timeline: Activity_idle id: android.os.BinderProxy@1679d870 time:165831
D/DefaultGooglePlayConnection( 5753): queryAppsByName[extended=false]: pname:com.android.providers.telephony [START]
E/AndroidRuntime( 5753): FATAL EXCEPTION: AsyncTask #1
E/AndroidRuntime( 5753): Process: com.android.vending, PID: 5753
E/AndroidRuntime( 5753): java.lang.RuntimeException: An error occured while executing doInBackground()
E/AndroidRuntime( 5753): at android.os.AsyncTask$3.done(AsyncTask.java:304)
E/AndroidRuntime( 5753): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
E/AndroidRuntime( 5753): at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
E/AndroidRuntime( 5753): at java.util.concurrent.FutureTask.run(FutureTask.java:242)
E/AndroidRuntime( 5753): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
E/AndroidRuntime( 5753): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
E/AndroidRuntime( 5753): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
E/AndroidRuntime( 5753): at java.lang.Thread.run(Thread.java:818)
E/AndroidRuntime( 5753): Caused by: com.gc.android.market.api.Tools$HttpException: HTTP Code 404 : Error=UNKNOWN_ERR
E/AndroidRuntime( 5753):
E/AndroidRuntime( 5753): at com.gc.android.market.api.Tools.postUrl(Tools.java:66)
E/AndroidRuntime( 5753): at com.gc.android.market.api.MarketSession.login(MarketSession.java:352)
E/AndroidRuntime( 5753): at com.gc.android.market.api.MarketSession.login(MarketSession.java:334)
E/AndroidRuntime( 5753): at com.android.vending.google.GooglePlayConnection.openConnectionSynced(GooglePlayConnection.java:131)
E/AndroidRuntime( 5753): at com.android.vending.google.DefaultGooglePlayConnection.startAppsRequestSynced(DefaultGooglePlayConnection.java:319)
E/AndroidRuntime( 5753): at com.android.vending.google.DefaultGooglePlayConnection.queryAppsByName(DefaultGooglePlayConnection.java:236)
E/AndroidRuntime( 5753): at com.android.vending.tasks.AppsTask.doInBackground(AppsTask.java:50)
E/AndroidRuntime( 5753): at com.android.vending.tasks.AppsTask.doInBackground(AppsTask.java:10)
E/AndroidRuntime( 5753): at android.os.AsyncTask$2.call(AsyncTask.java:292)
E/AndroidRuntime( 5753): at java.util.concurrent.FutureTask.run(FutureTask.java:237)
E/AndroidRuntime( 5753): ... 4 more
I/Process ( 5753): Sending signal. PID: 5753 SIG: 9
W/InputMethodManagerService( 2425): Got RemoteException sending setActive(false) notification to pid 5753 uid 10063
I/ActivityManager( 2425): Process com.android.vending (pid 5753) has died

I also opened a bug here

https://github.com/mar-v-in/BlankStore/issues/17