android - Integer type not allowed at 'padding' for 5dp -

i have project wrote, when finished it fine code worked no errors. 1 day open eclipse , have 3 errors, 1 each in 3 of of layouts.

two cases of:

error integer type not allowed @ 'padding' 

this error code:

<tablerow xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="5dp" >        # line error on 

the above same in 2 different layouts , code bellow third:

<textview     android:id="@+id/finalbilltextview"     android:layout_width="match_parent"     android:layout_height="wrap_content"     #line error on     android:layout_span="2"     android:layout_weight="1"     android:text="@string/total_bill_tv" /> 

with error of:

error parsing xml: duplicate attribute 

i dont understand how doing wrong. else in code use '5dp' or similar fine. if if delete code , retype errors go away, , wont return till reload eclipse.

i have tried creating value in dimens.xml file in values folder , referencing @dimen/ did not work ether , dont understand duplacate value @ all. eclipse error maybe?

if typo part didn't fix it(just mis typed above), doing "clean project" clears out error if using eclipse.