[ONE Themes and Apps] gimi87:
i noticed those errors when i try to use the maxxaudio after clear the spotify from recent apps:

2015-07-29 11:26:51,WARNING,Equalizer,WARNING: attaching an Equalizer to global output mix is deprecated!
2015-07-29 11:26:51,WARNING,BassBoost,WARNING: attaching a BassBoost to global output mix is deprecated!
2015-07-29 11:26:51,WARNING,Virtualizer,WARNING: attaching a Virtualizer to global output mix is deprecated!
2015-07-29 11:29:41,DEBUG,OpenGLRenderer,Use EGL_SWAP_BEHAVIOR_PRESERVED: true
2015-07-29 11:29:41,DEBUG,Atlas,Validating map...
2015-07-29 11:29:41,DEBUG,InfinitePagerAdapter,instantiateItem: real position: 1311
2015-07-29 11:29:41,DEBUG,InfinitePagerAdapter,instantiateItem: virtual position: 11
2015-07-29 11:29:41,DEBUG,InfinitePagerAdapter,instantiateItem: real position: 1310
2015-07-29 11:29:41,DEBUG,InfinitePagerAdapter,instantiateItem: virtual position: 10
2015-07-29 11:29:41,DEBUG,InfinitePagerAdapter,instantiateItem: real position: 1312
2015-07-29 11:29:41,DEBUG,InfinitePagerAdapter,instantiateItem: virtual position: 12
2015-07-29 11:29:41,INFORMATION,Adreno-EGL,<qeglDrvAPI_eglInitialize:410>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_LA.BF.1.1.1_RB1.05.01.00.042.030_msm8974_LA.BF.1.1.1_RB1__release_AU ()
OpenGL ES Shader Compiler Version: E031.25.03.06
Build Date: 04/15/15 Wed
Local Branch: mybranch9068252
Remote Branch: quic/LA.BF.1.1.1_rb1.19
Local Patches: NONE
Reconstruct Branch: AU_LINUX_ANDROID_LA.BF.1.1.1_RB1.05.01.00.042.030 + NOTHING
2015-07-29 11:29:41,INFORMATION,OpenGLRenderer,Initialized EGL, version 1.4
2015-07-29 11:29:41,DEBUG,OpenGLRenderer,Enabling debug mode 0
2015-07-29 11:29:41,ERROR,HeadsetService,Error enabling bass boost!
java.lang.RuntimeException: AudioEffect: set/get parameter error
at android.media.audiofx.AudioEffect.checkStatus(AudioEffect.java:1274)
at android.media.audiofx.BassBoost.setStrength(BassBoost.java:127)
at com.cyngn.maxxaudio.HeadsetService$EffectSet.setBassBoostStrength(HeadsetService.java:140)
at com.cyngn.maxxaudio.HeadsetService.updateDsp(HeadsetService.java:420)
at com.cyngn.maxxaudio.HeadsetService.update(HeadsetService.java:410)
at com.cyngn.maxxaudio.MasterConfigControl$CustomHandler.handleMessage(MasterConfigControl.java:985)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5289)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:115)

2015-07-29 11:29:41,INFORMATION,Adreno-ES20,<validate_vertex_attrib_state:53>: validate_vertex_attrib_state: No vertex attrib is enabled in a draw call!
2015-07-29 11:29:41,INFORMATION,Adreno-ES20,<validate_vertex_attrib_state:53>: validate_vertex_attrib_state: No vertex attrib is enabled in a draw call!
2015-07-29 11:29:41,INFORMATION,Adreno-ES20,<validate_vertex_attrib_state:53>: validate_vertex_attrib_state: No vertex attrib is enabled in a draw call!
2015-07-29 11:29:41,INFORMATION,Adreno-ES20,<validate_vertex_attrib_state:53>: validate_vertex_attrib_state: No vertex attrib is enabled in a draw call!
2015-07-29 11:29:41,INFORMATION,Adreno-ES20,<validate_vertex_attrib_state:53>: validate_vertex_attrib_state: No vertex attrib is enabled in a draw call!
2015-07-29 11:29:41,INFORMATION,Adreno-ES20,<validate_vertex_attrib_state:53>: validate_vertex_attrib_state: No vertex attrib is enabled in a draw call!
2015-07-29 11:29:41,INFORMATION,Adreno-ES20,<validate_vertex_attrib_state:53>: validate_vertex_attrib_state: No vertex attrib is enabled in a draw call!
2015-07-29 11:29:41,INFORMATION,Adreno-ES20,<validate_vertex_attrib_state:53>: validate_vertex_attrib_state: No vertex attrib is enabled in a draw call!
2015-07-29 11:29:41,INFORMATION,Adreno-ES20,<validate_vertex_attrib_state:53>: validate_vertex_attrib_state: No vertex attrib is enabled in a draw call!
2015-07-29 11:29:41,INFORMATION,Adreno-ES20,<validate_vertex_attrib_state:53>: validate_vertex_attrib_state: No vertex attrib is enabled in a draw call!
2015-07-29 11:29:41,ERROR,HeadsetService,Error enabling virtualizer!
2015-07-29 11:29:41,INFORMATION,Timeline,Timeline: Activity_idle id: android.os.BinderProxy@30477a6d time:1476425
2015-07-29 11:29:45,ERROR,HeadsetService,Error enabling maxx audio effects!
java.lang.RuntimeException: AudioEffect: set/get parameter error
at android.media.audiofx.AudioEffect.checkStatus(AudioEffect.java:1274)
at com.cyngn.maxxaudio.MaxxAudioEffects.setMaxxTrebleEnabled(MaxxAudioEffects.java:58)
at com.cyngn.maxxaudio.HeadsetService.updateDsp(HeadsetService.java:468)
at com.cyngn.maxxaudio.HeadsetService.update(HeadsetService.java:410)
at com.cyngn.maxxaudio.MasterConfigControl$CustomHandler.handleMessage(MasterConfigControl.java:985)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5289)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:115)

But... i found a simple workaround for working app... after use the spotify i clear recent apps and restart the com.cygn.maxxaudio process by using task manager (for example OS Monitor)

This is not a best solution, but the maxxaudio is working without a reboot of the phone