I read:
/usr/lib/pd/extra/vasp.pd_linux: libflext.so: cannot open shared object file: No such file or directory
do you have /usr/[local/]lib/pd/flext in your /etc/ld.conf.so ? if not, add it and run ldconfig
neither the syncgrain~ object ...if i try to create it i get: /usr/lib/pd/extra/syncgrain~.pd_linux: /usr/lib/pd/extra/syncgrain~.pd_linux: undefined symbol: _ZN12flext_sndobj4InitEv
do you have the sndobject library installed ?
HTH
x