Error detected while restoring session.

[Atuna]

I have checked my vimrc, but found nothing relevant with "winheight".
Any help would be appreciated. Thanks: )

Here is the log when processing session file:

"vimrc" 19 lines --5%--
Error detected while processing /Users/Shu/mysession.vim:
line  358:
E591: 'winheight' cannot be smaller than 'winminheight': winheight=1

Here is the line 358 of session file:

set shortmess=aoO
badd +0 vimrc
argglobal
silent! argdel *
argadd vimrc
edit vimrc
set splitbelow splitright
wincmd t
set winheight=1 winwidth=1 "here is line 358
argglobal
let s:cpo_save=&cpo
set cpo&vim
imap <buffer> <S-BS> <Plug>delimitMateS-BS
imap <buffer> <BS> <Plug>delimitMateBS