i use the latest code,but i have this problem too,how can i resolve it?please tell me,thanks!

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i use the latest code,but i have this problem too ,how can i resolve it?please tell me,thanks! problem log: java.lang.RuntimeException: error loading page at org.vudroid.pdfdroid.codec.PdfPage.open(Native Method) at org.vudroid.pdfdroid.codec.PdfPage.createPage(PdfPage.java:55) at org.vudroid.pdfdroid.codec.PdfDocument.getPage(PdfDocument.java:18) at org.vudroid.core.DecodeServiceBase.getPage(DecodeServiceBase.java:175) at org.vudroid.core.DecodeServiceBase.getPageWidth(DecodeServiceBase.java:214) at com.joanzapata.pdfview.PDFView.loadComplete(PDFView.java:626) at com.joanzapata.pdfview.DecodingAsyncTask.onPostExecute(DecodingAsyncTask.java:58) at com.joanzapata.pdfview.DecodingAsyncTask.onPostExecute(DecodingAsyncTask.java:31) at android.os.AsyncTask.finish(AsyncTask.java:632) at android.os.AsyncTask.access$600(AsyncTask.java:177) at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:645) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5104) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:801) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:617)