The camera component does not properly handle the IOExceptions coming from reading an image upload, as can be seen from this stack trace:

INFO: Adapting to Thread Blocking environment
java.lang.NullPointerException
        at org.icemobile.util.Utils.copyStream(Utils.java:94)
        at org.icefaces.mobi.utils.MobiJSFUtils.createMapOfFile(MobiJSFUtils.java:171)
        at org.icefaces.mobi.utils.MobiJSFUtils.decodeComponentFile(MobiJSFUtils.java:137)
        at org.icefaces.mobi.component.camera.CameraRenderer.extractImages(CameraRenderer.java:79)
        at org.icefaces.mobi.component.camera.CameraRenderer.decode(CameraRenderer.java:51)
        at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:787)
        at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1181)
        at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
        at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
        at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
        at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
        at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
        at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
        at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
        at javax.faces.component.UIForm.processDecodes(UIForm.java:225)
        at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
        at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
        at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:933)
        at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at com.icesoft.servlet.MultipartFilter.doFilter(MultipartFilter.java:74)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:662)


The decodeComponentFile is supposed to return a boolean indicating whether the file was successfully retrieved or not, but it does not catch any IOExceptions coming from Utils.copyStream. If it did it would be able to return false to properly indicate that the upload was not successful.