effects disappeared?

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Hi Guys
Was wondering if anyone could help me out here? Was adding new vst plugins(in the right place)and when I opened another project upon loading it said "LADSPA effect multichorus missing" upon further inspection all effects in my list are gone. any ideas...songs sound even worse than they did now lol.
if you have altered the path/ renamed/ moved the vst, then lmms wont automatically scan for it and wont find it. you also get problems if you use any uni-charachters in any path or filename inside your whole lmms instalation.