In commit 0496aa5ac7e1a99b082f5375c38da9871d08847c
"changed mongoimportJSON to mongoimport - handles json/tsv/csv"

installBinary process in SConstruct still needs to be updated.
Patch follows.

diff --git a/SConstruct b/SConstruct
index 086f45a..4223362 100644
— a/SConstruct
+++ b/SConstruct
@@ -1237,7 +1237,7 @@ installBinary( env , "mongodump" )
installBinary( env , "mongorestore" )

installBinary( env , "mongoexport" )
-installBinary( env , "mongoimportjson" )
+installBinary( env , "mongoimport" )

installBinary( env , "mongofiles" )