>>197あ、ブラウザの「ツール」からJavaコンソールが見えるんですね！！
最初のファイルが読み込めているんですが、その後エラーが起こっています。
java.security.AccessControlException: access denied (java.io.FilePermission IconImage/file.jpg read)

at java.security.AccessControlContext.checkPermission(Unknown Source)

at java.security.AccessController.checkPermission(Unknown Source)

at java.lang.SecurityManager.checkPermission(Unknown Source)

at java.lang.SecurityManager.checkRead(Unknown Source)

at sun.awt.SunToolkit.getImageFromHash(Unknown Source)

at sun.awt.SunToolkit.getImage(Unknown Source)

at javax.swing.ImageIcon.<init>(Unknown Source)

at javax.swing.ImageIcon.<init>(Unknown Source)

at OpePanel.<init>(OpePanel.java:103)

at SyncOperator.addFile(SyncOperator.java:99)

at ViewFrame.<init>(SomViewFrame.java:195)

at FuckinApplet.init(FuckinApplet.java:36)

at sun.applet.AppletPanel.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)