VASP doesn't write all wannier files

[askhetan]

dear all,

I compiled vasp with the Wannier90 v1.2. interface and use the following commands in my INCAR to write all the files:
LWANNIER90 = .TRUE.
LWRITE_UNK = .TRUE.
LWRITE_MMN_AMN=.TRUE.

However, vasp writes only the following files:
UNK00001.1
UNK00001.2
UNK00002.1
UNK00002.2
UNK00003.1
UNK00003.2
UNK00004.1
UNK00004.2
UNK00005.1
UNK00005.2
UNK00006.1
UNK00006.2
UNK00007.1
UNK00007.2
UNK00008.1
UNK00008.2
wannier90.dn.eig
wannier90.dn.mmn
wannier90.up.eig
wannier90.up.mmn
wannier90.win
wannier90.wout

As you can see, the files wannier90.up.amn and wannier90.dn.amn have not been written at all. When I try to run the wannier executable using the command (of course after renaming wannier90.win as wannier90.up.win):
$ ./wannier90.x wannier90.up.win

I get the error:
Reading overlaps from wannier90.up.mmn : File generated by VASP: unknown system
Exiting.......
Error: Problem opening input file wannier90.up.amn

Could someone please suggest what could be going wrong ? and why are the wannier90.up.amn and wannier90.dn.amn files are not being written ? This is related to num bands =! num_wann. When I use num wann = num_bands, then it doesnt ask for *amn files because there is no need for disentanglement. But what If I want to disentangle?

[support_vasp]

Hi,

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VASP