# Find help, please **URL:** \ **Category:** General Discussions\ **Created:** [June 4, 2019, 5:03am UTC](https://castor-project.discourse.group/t/find-help-please/92 "2019-06-04T05:03:11Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![user6](https://avatars.discourse-cdn.com/v4/letter/u/f1d935/32.png) [@user6](https://castor-project.discourse.group/u/user6)\ **Post date:** [June 4, 2019, 5:03am UTC](https://castor-project.discourse.group/t/find-help-please/92/1 "2019-06-04T05:03:11Z")
Dear CasTor users,   I had a problem when I used the castor to reconstruct image. here are the steps.   1. define the system and simulation, cylindricalPET, Root files.   2. a) by "castor-PetScannerLutEx -alias ini.mac", generating the "ini.mac.lut" and "ini.mac.hscan" files;       b) by "castor-GATEMacToGeom -m ini.mac -o out", generating the "out.geom" file.   3. by "castor-GATERootToCastor -i ../output/out.root -o ../output/w -m ini.mac -s ~/progs/Castor/castor\_v2.0.3/config/scanner/ini.mac.lut" to generate files, but I always got the problem, which were     "0 : ini.mac     \*\*\*\*\* sScannerManager::FindScannerSystem() -\> Scanner '/home/jack/progs/Castor/castor\_v2.0.3/config/scanner/ini.mac.lut' is not known in the scanner repository. Please provide a LUT/generic file for this scanner in the scanner repository in: /home/jack/progs/Castor/castor\_v2.0.3/config/scanner/"   Then I also tried the '.geom' files, but I also had the same problem.   What should I do to solve it? Thanks for your help!      Your Sincerely    Tianquan ---
**Author:** ![tmerlin](https://yyz2.discourse-cdn.com/free1/user_avatar/castor-project.discourse.group/tmerlin/32/216_2.png) [@tmerlin](https://castor-project.discourse.group/u/tmerlin)\ **Post date:** [June 4, 2019, 8:59am UTC](https://castor-project.discourse.group/t/find-help-please/92/2 "2019-06-04T08:59:46Z")
Dear Tianquan,