Google Play Games - game crashes after closing leaderboard

Hey! I use Google Play Games in my game. Everything is already configured and authorization works. The problem is when I open and close the leaderboard, game immediately crashes. I open it using this function:

 PlayGamesPlatform.Instance.ShowLeaderboardUI("CgkI6OHR7pIQEAIQAA");

It opens and works well. I can see the scores, but when I go back to game, it crashes.

Here are example crash reports I get:

 java.lang.Error: FATAL EXCEPTION [UnityMain]
 Unity version     : 5.1.2f1
 Device model      : LGE LG-D290
 Device fingerprint: lge/l70pn_global_com/l70pn:4.4.2/KOT49I.A1423829747/1423829747:user/release-keys
 
 Caused by: java.lang.Error: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00000002
 Build fingerprint: 'lge/l70pn_global_com/l70pn:4.4.2/KOT49I.A1423829747/1423829747:user/release-keys'
 Revision: '6'
 pid: 3684, tid: 3776, name: callback_queue  >>> com.TenPercent.PIGGURUN <<<
     r0 00000001  r1 6a5cbab8  r2 00000003  r3 68a2b4b0
     r4 696aab7c  r5 69aa6d60  r6 67171b50  r7 69aa6d54
     r8 696aab7c  r9 69aa6d50  sl 696aaba0  fp 00000006
     ip 00000001  sp 69aa6d30  lr 695e6d73  pc 00000002  cpsr 2e493934
 
     at Unknown.00000002(Unknown Source)
     at libgpg.000d0d71(Native Method)
     at libgpg.00058e45(Native Method)
     at libgpg.000aecef(Native Method)
     at libgpg.0006194d(Native Method)

 Build fingerprint: 'htc/htc_europe/htc_memul:4.4.2/KOT49H/405590.2:user/release-keys'
 Revision: '0'
 pid: 6659, tid: 6659, name: ercent.PIGGURUN  >>> com.TenPercent.PIGGURUN <<<
 signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
 Abort message: 'heap corruption detected by dlfree'
     r0 00000000  r1 00001a03  r2 00000006  r3 00000000
     r4 00000006  r5 0000000b  r6 00001a03  r7 0000010c
     r8 69fe8818  r9 4158c3f8  sl 6ac00029  fp 66773d60
     ip 400f71e8  sp befdf190  lr 400b9cb9  pc 400c8cb0  cpsr 000a0010
     d0  0000000000000000  d1  0000000000000000
     d2  0000000000000000  d3  0000000000000000
     d4  0000000044958000  d5  0000000000000000
     d6  441580003f800000  d7  3f80000000000000
     d8  3f8000003f800000  d9  449580003f800000
     d10 0000000042800000  d11 0000000000000000
     d12 0000000000000000  d13 0000000000000000
     d14 0000000000000000  d15 0000000000000000
     d16 726f632070616568  d17 206e6f6974707572
     d18 3ff0000000000000  d19 0000000000000000
     d20 8000000000000000  d21 8000000000000000
     d22 0000000000000000  d23 3ff0000000000000
     d24 0000000000000000  d25 0000000000000000
     d26 0000000000000000  d27 ffffffffffffffff
     d28 0100010001000100  d29 0100010001000100
     d30 0000010000000100  d31 0000010000000100
     scr 68000013
 
 backtrace:
     #00  pc 00022cb0  /system/lib/libc.so (tgkill+12)
     #01  pc 00013cb5  /system/lib/libc.so (pthread_kill+48)
     #02  pc 00013ec9  /system/lib/libc.so (raise+10)
     #03  pc 00012a63  /system/lib/libc.so
     #04  pc 00022564  /system/lib/libc.so (abort+4)
     #05  pc 00013549  /system/lib/libc.so
     #06  pc 0000f4a1  /system/lib/libc.so
     #07  pc 00011d23  /system/lib/libc.so (dlfree+286)
     #08  pc 0000dd9b  /system/lib/libc.so (free+10)
     #09  pc 004984d0  /mnt/asec/com.TenPercent.PIGGURUN-1/lib/libunity.so
     #10  pc 00492eb0  /mnt/asec/com.TenPercent.PIGGURUN-1/lib/libunity.so
     #11  pc 00020a4c  /system/lib/libdvm.so (dvmPlatformInvoke+112)
     #12  pc 00057689  /system/lib/libdvm.so (dvmCallJNIMethod(unsigned int const*, JValue*, Method const*, Thread*)+428)
     #13  pc 00000834  /dev/ashmem/dalvik-jit-code-cache (deleted)

Did you have a similiar problem before? Thanks for help.