Hi all, I am maintaining a quite big structured Therion database with more than 700 caves (https://github.com/robertxa/Topographies-Samoens_Folly). I am using Therion 6.3.3 (2025-01-06), TeX Live 2015 (MetaPost 1.999). Following a new session of exploration and surveys, I added some scraps in this database. I have no problem to run any compilation of separate caves. But since my last update, when I try to run a Therion compilation for the whole database to build the 3D view of the system (https://groupe-speleo-vulcain.com/wp-content/themes/custom_theme/3d/JB.html), I get an error during the « Preloading the plain mem file » : [...] [4090] [4091] [4092] [4093] [4094] [4095] ! Number is too large (4096). l.296920 beginfig(4096 ); [4096] ! Number is too large (4097). l.296923 beginfig(4097 ); [4097] … and so on… therion: error -- metapost exit code -- 512 I a m not sure, but I think that I have a total of 4102 objects (this is the last number with a similar error ; with a total of 4117 files written in thTMPDIR/). If I run Therion with the -d option, I see all the data.xxxx from 1 to 4102 in thTMPDIR/. The compressed log file is in attachement. I tried to recompile my database after commenting a small part of the database that I did not change recently. The compilation run well. So, I suspect that there is a limit in the number of objects (scraps ?) Therion (or mpost ?) can handle. Am I right ? Is there a way to get rid off this limitation ? Cheers, Xavier