I did not have the time to follow up this one, but perhaps there are some of you out there who are interested. Today I picked up by chance D. K. Kanjilal & K. Kanjilal, Sanskrit and Allied Manuscripts in Europe
(Sanskrit Pustak Bhandar, Calcutta), apparently a recent acquisition of the Bodleian. The book is a long list of pretty confused notes about various manuscript libraries the authors had the chance to visit in the U.K. and the continent (and there is no index... and there are many typos... but let's forget about all that, it seems like a very useful book).
The author reports a list of Nepalese mss. at the Chester Betty [sic!] Library
in Dublin. It's mostly Pañcarakṣās and dhāraṇīs, but one item - he says - is a Mañjuśrīmūlakalpa. Although he says that the ms. is 'very old', he also gives the 17th century as an estimated date. Does anyone happen to know more about this? It sounds like a false lead to me, but you can never know for certain.
Labels: kriyātantra, Mañjuśriyamūlakalpa, manuscripts, tantric studies