[NTG-context] standardmakeup environment didn't work in MKIV

Hi all, standardmakeup didn't work in MKIV. When I used this environment, It complains: error: Invalid field id writable for node type glue_spec (0) . \stopmakeup ...ter \c!color }{\stopcolor }\egroup \flushmarks \doflushmakeup... l.3 \stopstandardmakeup So, is this something deprecated or just some unexpected things happened? And what I supposed to do if I want to get the same results?