problem with pythia model import

I am generating the signal events for a BSM model that I have developed. It works at partonic level with no problem and physically it makes sense. But when it comes to showering and hadronization, pythia gives me an error and does not accept any lhe events because it says that it does not understand pdg code of intermediatory particle (e5 with PDG=13000). I have appended the log file.

What can be the source of this problem? I have already imported UFO files of model in madgraph event generation and it does work with madevent, but pythia has problem with linking with madgraph to get this information about particles that are not included in SM. I checked other BSM models and pythia works.

Here is the last part of pythia log file:

 *------- PYTHIA Event and Cross Section Statistics -------------------------------------------------------------*
 | |
 | Subprocess Code | Number of events | sigma +- delta |
 | | Tried Selected Accepted | (estimated) (mb) |
 | | | |
 |-----------------------------------------------------------------------------------------------------------------|
 | | | |
 | Les Houches User Process(es) 9999 | 100 100 0 | 0.000e+00 0.000e+00 |
 | ... whereof user classification code 1 | 100 100 0 | |
 | | | |
 | sum | 100 100 0 | 0.000e+00 0.000e+00 |
 | |
 *------- End PYTHIA Event and Cross Section Statistics ----------------------------------------------------------*

 *------- PYTHIA Error and Warning Messages Statistics ----------------------------------------------------------*
 | |
 | times message |
 | |
 | 100 Abort from Pythia::next: parton+hadronLevel failed; giving up |
 | 12190 Error in Pythia::check: unknown particle code |
 | 998 Error in Pythia::next: check of event revealed problems |
 | 2 Error in Pythia::next: hadronLevel failed; try again |
 | 1 Error in StringFragmentation::fragment: stuck in joining |
 | 1 Error in StringFragmentation::fragmentToJunction: caught in junction flavour loop |
 | 1 Info from Pythia::init: be aware that successive calls to init() do not clear previous settings. |
 | 2 Info from SLHAinterface::initSLHA: importing DECAY tables |
 | 1 Warning in Pythia::check: not quite matched particle energy/momentum/mass |
 | 2 Warning in SLHAinterface::initSLHA: Problem with SLHA spectrum. |
 | 4 Warning in SLHAinterface::initSLHA: adding off shell DECAY mode |
 | 2 Warning in SLHAinterface::initSLHA: ignoring DECAY tables |
 | 6 Warning in StringFragmentation::fragmentToJunction: bad convergence junction rest frame |
 | |
 *------- End PYTHIA Error and Warning Messages Statistics ------------------------------------------------------*