There is an error in the documentation for pvoc anal https://www.composersdesktop.com/docs/html/cpvocman.htm#USAGEANAL
It states that the maximum number of analysis points is 32768 however the process doesn't allow for values higher than 12380.
QuoteERROR: INCORRECT USE
ERROR: Parameter[1] Value (32768.000000) out of range (2.000000 to 16380.000000)
Also interestingly the documentation states that values must be a power of 2 which is standard for fft analysis and true for almost all values however, 16380 is not a power of 2; 2^14 is 16384. Although the process does run fine with 16380 as the parameter value despite this.