*** fatal error - Internal error: TP_NUM_C_BUFS too small: 50

[PeterRichardsWA]

platform: Windows 11 pro, fresh system install. Only apps installed are AppleWin and chrome browser. 16 gigs ram. Intel N100 processor.

running latest build from git as of 12/6/2024 and latest build of cyg from their website using installer.
followed directions on both and cyg install went without a problem.
added both tcpser directory and cyg directory to path
tried to run init line:
tcpser -d /dev/ttyS0 -s 2400 -p 2300 -L c:\tcpser.log -B busy-msg.txt -i "X3S0=1&C1&D2S2=128"

and get the error:
*** fatal error - Internal error: TP_NUM_C_BUFS too small: 50

Thought maybe this was a "current build issue" so i tried a package (dated 2/2017) that has just tcpser, cygwin1.dll and cyggc_s-1.dll in it, after putting them in a sep dir. ran it locally in dir and get a stack error :

Exception: STATUS_ACCESS_VIOLATION at eip=61175FEC
eax=00000000 ebx=0062D51C ecx=005B6594 edx=00000001 esi=0040B518 edi=005B6AB4
ebp=00000960 esp=005B64D0 program=C:\Users\surfm\temp\tcpser.exe, pid 52, thread main
cs=0023 ds=002B es=002B fs=0053 gs=002B ss=002B
Stack trace:
Frame Function Args

I have searched everywhere online and while i have similar error messages they are not related to tcpser, and do NOT offer a way to increase the buffer size (if that is indeed what the fix should be).