Hi Alec, That's a fun one. Is this the vanilla tut4 design after running update_casper_blocks? I can try and recreate the problem here....
Cheers Jack On Mon, 14 Nov 2016 at 16:35 Alec Josaitis <josai...@umich.edu> wrote: Dear Dave and Glenn, You were both correct, my MLIB_DEVEL_PATH returned any empty string; the variable was never set. I'm amazed I got to tutorial 4 without that mistake making itself present! I am now able to implement the green blocks as expected, and when I run the Simulation -> Update Diagram command, I do not receive any errors in a .log file. Indeed no error.log is even generated (as they had previously). However, I am still unable to compile the .slx file because of the following error: Operands to the || and && operators must be convertible to logical scalar values. I've checked the Casper Archive and noticed someone else having a similar problem <https://www.mail-archive.com/casper@lists.berkeley.edu/msg05733.html>, but there wasn't a clear resolution and I'm not quite sure how to fix this. This link <https://docs.google.com/document/d/19j-WE8WwAo2u_y2YQ07w5_TT0Nli5uXBxSoWoOdt2X8/edit?usp=sharing> provides the warning statements offered by MATLAB while running System -> Update Diagram (and again, this is all I have because no error log file was created). Do you have a suggestion on what could be causing this issue? Thank you all again for your recent and productive help! Best, Alec On Thu, Nov 10, 2016 at 5:12 PM, David MacMahon <dav...@berkeley.edu> wrote: Hi, Alec, I suspect your MLIB_DEVEL_PATH environment variable is not getting set. This error message... An error or warning occurred during a callback while saving '/casper_library/casper_library_bus.slx'. …shows that matlab is trying to save the casper_library_bus.slx file in "/casper_library" (i.e. one level down from the root directory). I suspect that’s not really where you’re mlib_devel lives. The matlab code that writes this file is shown in this part of the error message... Error in casper_library_bus_init (line 285) filename = save_system(mdl,[getenv('MLIB_DEVEL_PATH'), '/casper_library/', 'casper_library_bus']); As you can see, if "getenv('MLIB_DEVEL_PATH')" returns an empty string, the the file name which will be used is "/casper_library/casper_library_bus" (plus any extension that gets added by matlab/simulink). This is the path that is being used (see previous error message) so that indicates that MLIB_DEVEL_PATH is not being set in your environment (or maybe set but not "exported"). I think this is supposed to happen automatically as part of the "startsg" script. HTH, Dave
