<html><head></head><body><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div>hello everyone!</div><div>i have a problem with analyzing my root output file. Before running the simulation, i save my output with a different name (Arrow) and not the benchmarkPET. After running the simulation, (Arrow.root) file was created but then i cannot analyze it using the (.X analysis). i need help may be there's something i omitted.</div><div>thankyou</div><div><br></div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"></div></div></body></html>