what "nested quantifier" since causing regex fail?

i have regex i built tested regex buddy.

"_ [ 0-9]{10}+ {1}+[ 0-9]{10}+ {2}+[ 0-9]{6}+ {2}[ 0-9]{2}"

when i .net c#

i accept exception

"parsing \"_ [ 0-9]{10}+ +[ 0-9]{10}+  +[ 0-9]{6}+  [ 0-9]{2}\" - nested quantifier +."

what does blunder mean? apparently .net doesn't expression.

here regex associate u know idea regex...

_ [ 0-9]{10}+ {1}+[ 0-9]{10}+ {2}+[ 0-9]{6}+ {2}[ 0-9]{2}

match characters "_ " literally «_ 
match unparalleled impression donation list next «[ 0-9]{10}+
   accurately 10 times «{10}+
   impression " " « 
   impression operation between "0" "9" «0-9
match impression " " literally « {1}+
   accurately 1 times «{1}+
match unparalleled impression donation list next «[ 0-9]{10}+
   accurately 10 times «{10}+
   impression " " « 
   impression operation between "0" "9" «0-9
match impression " " literally « {2}+
   accurately 2 times «{2}+
match unparalleled impression donation list next «[ 0-9]{6}+
   accurately 6 times «{6}+
   impression " " « 
   impression operation between "0" "9" «0-9
match impression " " literally « {2}
   accurately 2 times «{2}
match unparalleled impression donation list next «[ 0-9]{2}
   accurately 2 times «{2}
   impression " " « 
   impression operation between "0" "9" «0-9

in short...

what nested quantifier?