Ddms files not found: tools \ hprof-conv.exe

Some errors are reported each time the ADT and SDK are updated in eclipse, such

Ddms files not found: D: \ android-sdk-windows-1.6_r1 \ android-sdk-windows-1.6_r1 \ platform-tools \ adb.exe
Ddms files not found: tools \ hprof-conv.exe
......
In addition, by the way, the SDK folder size increases too quickly after Android SDK 4.0, especially when android5.0 is updated, the SDK folder size increases from 20 GB to 30 GB, what's the problem? Although the hard disk is cheap now, it's not waiting for it.

Solution: Find the ADB file in the tools directory under the Android-SDK-Windows \ android-sdk-windows-1.6_r1 \ tools directory, then copy it to Android-SDK-Windows \ android-sdk-windows-1.6_r1 \ platform-tools here
Other errors are the same.

DDMS files not found: tools\hprof-conv.exe 

Ddms files not found: tools \ hprof-conv.exe