I'm on Ubuntu and just installed the Android SDK (SDK only) for 64-bit Linux. Then I installed the ADT plugin for Eclipse. When I restarted Eclipse, he asked me to open the SDK manager and install some SDKs for the OS, so I installed some developer tools and the most recent (I believe this is 4.2.2) Android distribution. Then I restarted Eclipse and did not receive any console errors or warnings.
Then I tried to open several Android views ("Heap", "LogCat", etc.) and got the following error:

What is it and why do I see it? What can I do to fix this? Thanks in advance!
Update: executing ls -l in the appropriate directory creates:
myUser@myMachine :~$ ls -l ~/sandbox/dsi/workbench/android-sdk/21.1/android-sdk-linux/platform-tools/ total 27960 -rwxrwxr-x 1 myUser myUser 1122758 Apr 11 10:29 aapt -rwxrwxr-x 1 myUser myUser 1226659 Apr 11 10:29 adb -rwxrwxr-x 1 myUser myUser 269818 Apr 11 10:29 aidl drwxrwxr-x 2 myUser myUser 4096 Apr 11 10:29 api -rwxrwxr-x 1 myUser myUser 444481 Apr 11 10:29 dexdump -rwxrwxr-x 1 myUser myUser 2603 Apr 11 10:29 dx -rwxrwxr-x 1 myUser myUser 176550 Apr 11 10:29 fastboot drwxrwxr-x 2 myUser myUser 4096 Apr 11 10:29 lib -rwxrwxr-x 1 myUser myUser 24867619 Apr 11 10:29 llvm-rs-cc -rw-rw-r-- 1 myUser myUser 467531 Apr 11 10:29 NOTICE.txt drwxrwxr-x 4 myUser myUser 4096 Apr 11 10:29 renderscript -rw-rw-r-- 1 myUser myUser 16648 Apr 11 10:29 source.properties myUser@myMachine :~$
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