Error : Could not initialize class com.altera.systemconsole.internal.plugin.jtag.aji

[Altera_Forum]

Hi everyone,  

 I have a custom board with an EP3C10 wich I access with the JTAG port. I have an USB Blaster to download both the vhdl and the code for the nios2. I'm working with windows 7 32bits with Quartus2 10.1 sp1.05.  Yesterday, everything worked fine, but today morning, I cannot download the nios2 software.  I manage to download the vhdl and the output of the FPGA run fine so I understand that my FPGA and the JTAG port are both OK. and so do the USB Blaster.  In Eclipse when I select "run configuration", on the "target connection" tap, I have this error message :   system console: could not initialize class com.altera.systemconsole.internal.plugin.jtag.aji.ajicable  and when I click on "refresh connection", nothing happen! Well, the button is locked for 2 second and then it come back to its previous state...  Has anyone any clue to solve that ?  Thank you

[Altera_Forum]

Can I ask a couple of questions about your setup? 

 What's on your path when you run Eclipse? Do you have multiple copies of Quartus/ACDS installed?  Thanks.

[Altera_Forum]

Hi, I forgot to reply to this thread. The system is working again. 

 But, because there is a but, I can't explain why it wasn't working and why it works now. I have tried several times several way to have my download to success: - I have closed eclipse and started it again => no use. - switched off the computer and reboot => same here. - re-install the USB driver => again it wasn't that. - others stuff I can't remember. And every time, the same error message appeared.  But once, and I don't know why, it worked, and since, I don't have any problem anymore. I should have done something to change the behavior but I don't know what it is.  To answer your question : yes, I have quartus 9.1sp2 and quartus 10.1sp1.05 installed.

[Altera_Forum]

I'm glad you've got it working again. 

 The error message occurs because that Java code is unable to load it's native library, JtagJNI.dll.  What I suspect happened here is that your path had somehow made windows load the wrong versions of the native library - one which is not compatible with the Java - or that that DLL found the wrong version of a dll it depends on. (The windows DLL loading rules are byzantine, and Java doesn't really provide any good ways to override them)  But I'd like proof before jumping to conclusions.

[Altera_Forum]

hi! 

i have had a long discussion with wombat for building a connection from matlab to my nios2. after many hours of reading and searching, i suppose that the best possibility should be, to use systemconsole via matlab (=> Matlabapi) - wombat told me.  after a long time i finally can create a java object in matlab for establishing the connection.   the problem: when i use "L1 = com.altera.systemconsole.matlabapi.SystemConsoleLink" the object is created successfully but i get the message: ---------- 05.08.2011 09:42:55 com.altera.systemconsole.internal.core.SystemConsole$PluginDiscovery run  INFO: Finished initialization  05.08.2011 09:42:55 com.altera.systemconsole.internal.core.SystemConsole logSevere  SCHWERWIEGEND: Could not initialize class com.altera.systemconsole.internal.plugin.jtag.aji.AJICable  java.lang.RuntimeException: java.lang.NoClassDefFoundError: Could not initialize class com.altera.systemconsole.internal.plugin.jtag.aji.AJICable   at com.altera.systemconsole.internal.core.SystemExecutor$3.run(SystemExecutor.java:438)   at com.altera.systemconsole.internal.core.SystemExecutor$TaskComparator$ComparatorPolicy.run(SystemExecutor.java:207)   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)   at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)   at java.lang.Thread.run(Unknown Source)  Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.altera.systemconsole.internal.plugin.jtag.aji.AJICable   at com.altera.systemconsole.internal.plugin.jtag.aji.AJIConnectionProvider.queryCables(AJIConnectionProvider.java:48)   at com.altera.systemconsole.internal.plugin.jtag.JtagConnectionProvider.doRescan(JtagConnectionProvider.java:174) ... ----------------------------- so i get the same error when i try to build a connection via matlabapi and the problem is - ???  when i start system-console.exe (from the E:\altera\11.0\quartus\sopc_builder\bin) system-console can establish the connection and i can send tcl-commands.  ok today i was able to produce the error with an other file. i have a copy from system-console.exe from an old installtion (i set up a new system win7-64 ->winXP-32) and its possible to start it but i got the same error like in matlab. problem with jtagdni.dll.  mhh - i have no idea how to fix it ???  do you have an idea now how you fixed your problem?