[Repast-developer] New Repast model won't load

[<cs...@ba...>]

Hi,

I'm a student at the University of Bath, UK. My final year project is 
in the domain of ABM. Specifically, I'll be modelling the allocation of 
resources in Grid systems using Continuous Double Auctions. I am using 
Repast as my ABM platform.

I have so far encountered several problems with Repast:

- I am currently stuck on one problem. I ran my model and it resulted 
in a nullPointerException. I detected the cause of the error, corrected 
and compiled the correct version. But when I re-load the model and run 
it, I get exactly the same error, with the same line number even though 
the correction I made meant that the erroneous line number is now 
empty. I have restarted my computer but had exactly the same error. I 
went as far as uninstalling and reinstalling Repast but so far my 
efforts have proved vain. It looks to me as though Repast has somehow 
stored the old model and does not load the new model. But if this were 
the case, I would expect the uninstallation of repast to have cleaned 
up everything. But this (uninstallation) hasn't worked.  Any help with 
this would be greatly appreciated.

I have had 2 other problems that I managed to overcome.

1) For some unknown reason, when I launch repast using Repast.exe 
(which is added to my list of programs as part of the installation), 
the 'load Model' button stops working. This has _not_ always been the 
case; it used to work before. I have uninstalled and reinstalled Repast 
but the problem has persisted. Very Strange! To launch Repast, I now 
use the Repast.jar file in the 'Repast J' folder.

2) My model uses a number of JASA (Java Auction Simulation API) 
packages. My model compiles but at Runtime, I had a 
classDefNotFoundError exception. I added the location of all packages 
to I used to classpath (the system variable); this didn't work. I 
overcame this problem by adding all the packages I was used in the 
'Repast J/lib' folder.