[pluggo] why doesn't this vst work ?

i made this midi cc editor for a hardware synth in max and i'm trying to port it to pluggo so i can load it as a vst but when i put the dll in my vst folder ableton can't see them. i have successfully built and run midi vsts made with pluggo before. This is a cut down example with just one control. why the hell doesn't pluggo want to do this? i've had other near identical versions where one will compile and run and the other won't. i'm pulling my hair out over this, can anyone advise ?

max v2;
#N vpatcher 528 31 1676 800;
#P origin -9 0;
#P window setfont "Sans Serif" 9.;
#P message 331 437 49 9109513 recall \$1;
#P number 331 417 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
#P message 303 389 35 9109513 set \$1;
#P number 303 368 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
#P number 262 417 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
#P message 262 437 55 9109513 capture \$1;
#P button 262 378 27 0;
#P comment 254 362 35 9109513 Store!;
#P comment 343 369 115 9109513 Store Program Number:;
#P comment 370 416 114 9109513 Recall Program Number:;
#N plugconfig;
#C useviews 1 1 1 1;
#C numprograms 64;
#C preempt 1;
#C sigvschange 1;
#C sigvsdefault 32;
#C autosize;
#C defaultview Interface 0 0 0;
#C dragscroll 1;
#C noinfo;
#C package ????;
#C setprogram 1 "Program 1" 0 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.;
#C setprogram 2 "Program 2" 0 0. 0. 0. 0. 0.637795 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.370079 0. 0.;
#C uniqueid 128 248 41;
#C initialpgm 1;
#P newobj 262 468 51 9109513 plugconfig;
#P newex 104 375 38 9109513 pipe 10;
#P message 119 120 34 9109513 set \$1;
#P newex 119 95 42 9109513 route 62;
#P message 104 403 31 9109513 62 \$1;
#N pp 62 Portamento_Mode 0 1;
#P newobj 183 95 125 9109513 pp 62 Portamento_Mode 0 1;
#P window setfont System 9.;
#P comment 404 290 55 12058633 PITCH;
#P window setfont "Sans Serif" 9.;
#P comment 403 317 77 9109513 Portamento Mode;
#P user umenu 485 317 100 9109543 1 64 333 1;
#X add Normal;
#X add Legato;
#P newex 9 49 92 9109513 midiparse;
#P newex 9 21 49 9109513 plugmidiin;
#P newex 10 495 92 9109513 midiformat;
#P newex 10 537 55 9109513 plugmidiout;
#P connect 2 0 3 0;
#P connect 3 0 1 0;
#P fasten 1 0 0 0 15 528 15 528;
#P connect 3 1 1 1;
#P fasten 8 0 1 2 109 434 41 434;
#P connect 3 3 1 3;
#P connect 3 4 1 4;
#P connect 3 5 1 5;
#P connect 3 6 1 6;
#P hidden fasten 4 0 11 0 490 340 109 340;
#P connect 11 0 8 0;
#P fasten 3 2 9 0 40 81 124 81;
#P connect 9 0 10 0;
#P fasten 10 0 7 0 124 141 169 141 169 82 188 82;
#P hidden fasten 4 0 7 0 490 336 488 337 108 337 108 77 188 77;
#P hidden connect 20 0 18 0;
#P hidden connect 16 0 18 0;
#P hidden connect 18 0 17 0;
#P connect 17 0 12 0;
#P connect 22 0 12 0;
#P hidden connect 19 0 20 0;
#P hidden connect 21 0 22 0;
#P hidden fasten 10 0 4 0 124 312 490 312;
#P hidden fasten 7 0 4 0 188 144 124 144 124 312 490 312;
#P pop;