Crashes, freezes and other bugs
Frequently Asked Questions

  1. Question: My Netscape 4.x browser crashed when I closed a window containing frames, tables and a MarvinView applets. Is it a Marvin bug?

    Answer: No! It probably has nothing to do with Marvin. Pages containing frames, tables and applets may crash Netscape under certain circumstances. Such crashes are independent of the applet code. See our bug demo page that contains ten empty applets.

    However, these crashes may be avoided by careful programming/testing.

  2. Q: I tried to choose a template set (such as "Rings") in MarvinSketch on my page but the applet does not respond.

    A: The most likely cause is that the applet is improperly installed or there is a wrong ARCHIVE or CODEBASE setting in the applet tag, so it cannot find the chemaxon/marvin/templates directory. If Marvin is installed into "somedirectory", then
    use this: ARCHIVE="marvin.jar" CODEBASE="somedirectory"
    NOT this (WRONG!): ARCHIVE="somedirectory/marvin.jar"

  3. Q: I tried to do ... but the applet on my page does not respond, and I found a message in the Java Console: "Cannot preload module: ..."

    A: The most likely cause is that the applet is improperly installed or there is a wrong ARCHIVE or CODEBASE setting in the applet tag, so it cannot find the class files in the chemaxon/marvin/modules/ directory. If Marvin is installed into "somedirectory", then
    use this: ARCHIVE="marvin.jar" CODEBASE="somedirectory"
    NOT this (WRONG!): ARCHIVE="somedirectory/marvin.jar"

  4. Q: How can I report a Marvin bug?

    A: Write a mail to bugs@chemaxon.com describing the circumstances:

    1. What happened, and what did you exactly do before it happened.
    2. The Stack Trace.
      If an error window is popped up, please press "Stack Trace" and send its full contents to us. If you have no error window, then please send the full contents of the Java Console (in Netscape: Communicator/Tools/Java Console).
    3. The http address if you found the bug on an internet web page, otherwise please send us the full page.
    4. Which applet? (MarvinView or MarvinSketch)
    5. Marvin version (see Help/About).
    6. Marvin/AWT or Marvin/Swing? (see Help/About)