quartus ii internal error!

[Altera_Forum]

Hi, 

 In my quartus project, i add some nodes for debug in SignalTap. While a quartus ii internal error occur when i full compile the design after adding nodes.   The error information is:   Internal Error: Sub-system: HDB, File: /quartus/db/hdb/hdb_grp_inst_sche.cpp, Line: 780 Bad group type. Stack Trace:  0x3b02d: HDB_INSTANCE_NAME::get_member + 0x11d (DB_HDB)  0xb5001: HDB_NAME_INFO::~HDB_NAME_INFO + 0xf31 (DB_HDB)  0x2e007: HDB_NORM_INSTANCE_NAME::get_flag + 0x17 (DB_HDB)  0x364b9: HDB_INSTANCE_NAME::create_group_helper + 0x1e9 (DB_HDB)  0x4045f: HDB_INSTANCE_NAME::create_child_helper + 0x52f (DB_HDB)  0x5580: mem_out_of_memory + 0x4f0 (ccl_mem)  0x9702: MEM_SEGMENT_INTERNAL::locked_allocate + 0x62 (ccl_mem)  0x82c5: MEM_SEGMENT_INTERNAL::allocate + 0x95 (ccl_mem) End-trace Quartus II Version 9.1 Build 222 10/21/2009 SJ Full Version   If i disable the "SignalTap II Logic Analyzer", no error occur when compiling!   Has anyone ever met this before?

[Altera_Forum]

You can file a SR to Altera, it looks like a bug. 

I had the same kind of error sometimes when I used an output as a clock in signal tap, try to change a few things in your signaltap setup and see if it gets better.

[Altera_Forum]

--- Quote Start ---  Quartus II Version 9.1 Build 222 10/21/2009 SJ Full Version  --- Quote End ---    this is not the latest version, have you installed SP2 ? my Quartus 9.1 reports    --- Quote Start ---  Quartus II Version 9.1 Build 350 03/24/2010 SJ Full Version Service Pack Installed 2.46  --- Quote End ---  

[Altera_Forum]

Thanks for your advice. I had tried to add or remove some nodes in SignalTap, and nothing seemed to be better even i keep only one node for debug. The quartus internal error don't occur only if i disable the SignalTap!

[Altera_Forum]

did you try to change the clock used for the signaltap sampling?

[Altera_Forum]

I have tried to change the sampling clock, and error still occurs!

[Altera_Forum]

Hi, MSchmitt and Daixiwen  

 Thanks for the advice from both of you. After i installed the sp2 for quartus, it seems to be ok now! Maybe it's really a software bug in "Quartus II Version 9.1 Build 222 10/21/2009 SJ Full Version".

[Altera_Forum]

I just had one for  

  Internal Error: Sub-system: HDB, File: /quartus/db/hdb/hdb_inst_name.cpp, Line 696  I was trying to observe one of my PLLs. I went into SignalTap and deleted those signals and it started working again (after much troubleshooting!)